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Finding the Fourth Proportional to 71,275.30, 98,358.36 and 39,009.76

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Solution

The fourth proportional to 71,275.30, 98,358.36 and 39,009.76 is: 53,832.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,275.30 : 98,358.36 = 39,009.76 : x
  2. Step 2: Convert to fraction form
    71,275.30/98,358.36 = 39,009.76/x
  3. Step 3: Cross multiply
    71,275.30x = 98,358.36 × 39,009.76
  4. Step 4: Simplify right side
    71,275.30x = 3,836,936,017.59
  5. Step 5: Solve for x
    x = 3,836,936,017.59/71,275.30
  6. Step 6: Final answer
    x = 53,832.62

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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.