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Finding the Fourth Proportional to 98,187.92, 135,492.92 and 57,899.76

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Solution

The fourth proportional to 98,187.92, 135,492.92 and 57,899.76 is: 79,897.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,187.92 : 135,492.92 = 57,899.76 : x
  2. Step 2: Convert to fraction form
    98,187.92/135,492.92 = 57,899.76/x
  3. Step 3: Cross multiply
    98,187.92x = 135,492.92 × 57,899.76
  4. Step 4: Simplify right side
    98,187.92x = 7,845,007,549.70
  5. Step 5: Solve for x
    x = 7,845,007,549.70/98,187.92
  6. Step 6: Final answer
    x = 79,897.89

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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.