Home / 71,328.21-98,432.87-39,497.11

Finding the Fourth Proportional to 71,328.21, 98,432.87 and 39,497.11

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Solution

The fourth proportional to 71,328.21, 98,432.87 and 39,497.11 is: 54,505.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,328.21 : 98,432.87 = 39,497.11 : x
  2. Step 2: Convert to fraction form
    71,328.21/98,432.87 = 39,497.11/x
  3. Step 3: Cross multiply
    71,328.21x = 98,432.87 × 39,497.11
  4. Step 4: Simplify right side
    71,328.21x = 3,887,813,204.36
  5. Step 5: Solve for x
    x = 3,887,813,204.36/71,328.21
  6. Step 6: Final answer
    x = 54,505.97

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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.