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Finding the Fourth Proportional to 71,160, 98,200.96 and 42,866.88

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Solution

The fourth proportional to 71,160, 98,200.96 and 42,866.88 is: 59,156.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,160 : 98,200.96 = 42,866.88 : x
  2. Step 2: Convert to fraction form
    71,160/98,200.96 = 42,866.88/x
  3. Step 3: Cross multiply
    71,160x = 98,200.96 × 42,866.88
  4. Step 4: Simplify right side
    71,160x = 4,209,568,768.20
  5. Step 5: Solve for x
    x = 4,209,568,768.20/71,160
  6. Step 6: Final answer
    x = 59,156.39

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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.