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Finding the Fourth Proportional to 71,200.71, 98,257 and 40,572.93

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Solution

The fourth proportional to 71,200.71, 98,257 and 40,572.93 is: 55,990.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,200.71 : 98,257 = 40,572.93 : x
  2. Step 2: Convert to fraction form
    71,200.71/98,257 = 40,572.93/x
  3. Step 3: Cross multiply
    71,200.71x = 98,257 × 40,572.93
  4. Step 4: Simplify right side
    71,200.71x = 3,986,573,891.73
  5. Step 5: Solve for x
    x = 3,986,573,891.73/71,200.71
  6. Step 6: Final answer
    x = 55,990.65

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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.