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Finding the Fourth Proportional to 98,094.80, 135,411.96 and 66,306.76

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Solution

The fourth proportional to 98,094.80, 135,411.96 and 66,306.76 is: 91,531.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,094.80 : 135,411.96 = 66,306.76 : x
  2. Step 2: Convert to fraction form
    98,094.80/135,411.96 = 66,306.76/x
  3. Step 3: Cross multiply
    98,094.80x = 135,411.96 × 66,306.76
  4. Step 4: Simplify right side
    98,094.80x = 8,978,728,332.85
  5. Step 5: Solve for x
    x = 8,978,728,332.85/98,094.80
  6. Step 6: Final answer
    x = 91,531.13

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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.