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Finding the Fourth Proportional to 98,400.59, 135,788.90 and 58,127.29

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Solution

The fourth proportional to 98,400.59, 135,788.90 and 58,127.29 is: 80,213.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,400.59 : 135,788.90 = 58,127.29 : x
  2. Step 2: Convert to fraction form
    98,400.59/135,788.90 = 58,127.29/x
  3. Step 3: Cross multiply
    98,400.59x = 135,788.90 × 58,127.29
  4. Step 4: Simplify right side
    98,400.59x = 7,893,040,769.08
  5. Step 5: Solve for x
    x = 7,893,040,769.08/98,400.59
  6. Step 6: Final answer
    x = 80,213.35

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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.