Home / 86,987.46-120,100.52-66,808.28

Finding the Fourth Proportional to 86,987.46, 120,100.52 and 66,808.28

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Solution

The fourth proportional to 86,987.46, 120,100.52 and 66,808.28 is: 92,239.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,987.46 : 120,100.52 = 66,808.28 : x
  2. Step 2: Convert to fraction form
    86,987.46/120,100.52 = 66,808.28/x
  3. Step 3: Cross multiply
    86,987.46x = 120,100.52 × 66,808.28
  4. Step 4: Simplify right side
    86,987.46x = 8,023,709,168.31
  5. Step 5: Solve for x
    x = 8,023,709,168.31/86,987.46
  6. Step 6: Final answer
    x = 92,239.84

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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.