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Finding the Fourth Proportional to 108,070.79, 149,169.36 and 62,769.13

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Solution

The fourth proportional to 108,070.79, 149,169.36 and 62,769.13 is: 86,639.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,070.79 : 149,169.36 = 62,769.13 : x
  2. Step 2: Convert to fraction form
    108,070.79/149,169.36 = 62,769.13/x
  3. Step 3: Cross multiply
    108,070.79x = 149,169.36 × 62,769.13
  4. Step 4: Simplify right side
    108,070.79x = 9,363,230,576.93
  5. Step 5: Solve for x
    x = 9,363,230,576.93/108,070.79
  6. Step 6: Final answer
    x = 86,639.79

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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.