Home / 71,420.28-98,549.64-39,589.17

Finding the Fourth Proportional to 71,420.28, 98,549.64 and 39,589.17

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Solution

The fourth proportional to 71,420.28, 98,549.64 and 39,589.17 is: 54,627.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,420.28 : 98,549.64 = 39,589.17 : x
  2. Step 2: Convert to fraction form
    71,420.28/98,549.64 = 39,589.17/x
  3. Step 3: Cross multiply
    71,420.28x = 98,549.64 × 39,589.17
  4. Step 4: Simplify right side
    71,420.28x = 3,901,498,451.40
  5. Step 5: Solve for x
    x = 3,901,498,451.40/71,420.28
  6. Step 6: Final answer
    x = 54,627.32

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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.