Home / 71,531.08-98,724.60-39,710.20

Finding the Fourth Proportional to 71,531.08, 98,724.60 and 39,710.20

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Solution

The fourth proportional to 71,531.08, 98,724.60 and 39,710.20 is: 54,806.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,531.08 : 98,724.60 = 39,710.20 : x
  2. Step 2: Convert to fraction form
    71,531.08/98,724.60 = 39,710.20/x
  3. Step 3: Cross multiply
    71,531.08x = 98,724.60 × 39,710.20
  4. Step 4: Simplify right side
    71,531.08x = 3,920,373,610.92
  5. Step 5: Solve for x
    x = 3,920,373,610.92/71,531.08
  6. Step 6: Final answer
    x = 54,806.58

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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.