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Finding the Fourth Proportional to 108,077.60, 149,146.50 and 62,766.71

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Solution

The fourth proportional to 108,077.60, 149,146.50 and 62,766.71 is: 86,617.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,077.60 : 149,146.50 = 62,766.71 : x
  2. Step 2: Convert to fraction form
    108,077.60/149,146.50 = 62,766.71/x
  3. Step 3: Cross multiply
    108,077.60x = 149,146.50 × 62,766.71
  4. Step 4: Simplify right side
    108,077.60x = 9,361,434,367.28
  5. Step 5: Solve for x
    x = 9,361,434,367.28/108,077.60
  6. Step 6: Final answer
    x = 86,617.72

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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.