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Finding the Fourth Proportional to 85,329.38, 127,746.18 and 49,681.96

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Solution

The fourth proportional to 85,329.38, 127,746.18 and 49,681.96 is: 74,378.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,329.38 : 127,746.18 = 49,681.96 : x
  2. Step 2: Convert to fraction form
    85,329.38/127,746.18 = 49,681.96/x
  3. Step 3: Cross multiply
    85,329.38x = 127,746.18 × 49,681.96
  4. Step 4: Simplify right side
    85,329.38x = 6,346,680,285.55
  5. Step 5: Solve for x
    x = 6,346,680,285.55/85,329.38
  6. Step 6: Final answer
    x = 74,378.60

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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.