Home / 86,985,999,815.45-120,051,129,880.63-52,690,700,102.72

Finding the Fourth Proportional to 86,985,999,815.45, 120,051,129,880.63 and 52,690,700,102.72

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Solution

The fourth proportional to 86,985,999,815.45, 120,051,129,880.63 and 52,690,700,102.72 is: 72,719,496,182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,985,999,815.45 : 120,051,129,880.63 = 52,690,700,102.72 : x
  2. Step 2: Convert to fraction form
    86,985,999,815.45/120,051,129,880.63 = 52,690,700,102.72/x
  3. Step 3: Cross multiply
    86,985,999,815.45x = 120,051,129,880.63 × 52,690,700,102.72
  4. Step 4: Simplify right side
    86,985,999,815.45x = 6,325,578,081,532,362,358,784
  5. Step 5: Solve for x
    x = 6,325,578,081,532,362,358,784/86,985,999,815.45
  6. Step 6: Final answer
    x = 72,719,496,182.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.