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Finding the Fourth Proportional to 98,291.92, 135,642.80 and 58,005.76

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Solution

The fourth proportional to 98,291.92, 135,642.80 and 58,005.76 is: 80,047.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,291.92 : 135,642.80 = 58,005.76 : x
  2. Step 2: Convert to fraction form
    98,291.92/135,642.80 = 58,005.76/x
  3. Step 3: Cross multiply
    98,291.92x = 135,642.80 × 58,005.76
  4. Step 4: Simplify right side
    98,291.92x = 7,868,063,702.53
  5. Step 5: Solve for x
    x = 7,868,063,702.53/98,291.92
  6. Step 6: Final answer
    x = 80,047.92

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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.