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Finding the Fourth Proportional to 71,019.65, 98,007.02 and 39,188.54

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Solution

The fourth proportional to 71,019.65, 98,007.02 and 39,188.54 is: 54,080.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,019.65 : 98,007.02 = 39,188.54 : x
  2. Step 2: Convert to fraction form
    71,019.65/98,007.02 = 39,188.54/x
  3. Step 3: Cross multiply
    71,019.65x = 98,007.02 × 39,188.54
  4. Step 4: Simplify right side
    71,019.65x = 3,840,752,023.55
  5. Step 5: Solve for x
    x = 3,840,752,023.55/71,019.65
  6. Step 6: Final answer
    x = 54,080.13

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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.