Home / 50,724.64-70,000-28,368.64

Finding the Fourth Proportional to 50,724.64, 70,000 and 28,368.64

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Solution

The fourth proportional to 50,724.64, 70,000 and 28,368.64 is: 39,148.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,724.64 : 70,000 = 28,368.64 : x
  2. Step 2: Convert to fraction form
    50,724.64/70,000 = 28,368.64/x
  3. Step 3: Cross multiply
    50,724.64x = 70,000 × 28,368.64
  4. Step 4: Simplify right side
    50,724.64x = 1,985,804,800
  5. Step 5: Solve for x
    x = 1,985,804,800/50,724.64
  6. Step 6: Final answer
    x = 39,148.72

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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.