Home / 71,220.28-98,280-38,948.48

Finding the Fourth Proportional to 71,220.28, 98,280 and 38,948.48

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Solution

The fourth proportional to 71,220.28, 98,280 and 38,948.48 is: 53,746.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,220.28 : 98,280 = 38,948.48 : x
  2. Step 2: Convert to fraction form
    71,220.28/98,280 = 38,948.48/x
  3. Step 3: Cross multiply
    71,220.28x = 98,280 × 38,948.48
  4. Step 4: Simplify right side
    71,220.28x = 3,827,856,614.40
  5. Step 5: Solve for x
    x = 3,827,856,614.40/71,220.28
  6. Step 6: Final answer
    x = 53,746.72

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Double scale
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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.