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Finding the Fourth Proportional to 108,566.90, 162,866.55 and 38,440.70

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Solution

The fourth proportional to 108,566.90, 162,866.55 and 38,440.70 is: 57,666.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,566.90 : 162,866.55 = 38,440.70 : x
  2. Step 2: Convert to fraction form
    108,566.90/162,866.55 = 38,440.70/x
  3. Step 3: Cross multiply
    108,566.90x = 162,866.55 × 38,440.70
  4. Step 4: Simplify right side
    108,566.90x = 6,260,704,188.59
  5. Step 5: Solve for x
    x = 6,260,704,188.59/108,566.90
  6. Step 6: Final answer
    x = 57,666.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.