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Finding the Fourth Proportional to 98,678.52, 136,167.84 and 55,655.64

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Solution

The fourth proportional to 98,678.52, 136,167.84 and 55,655.64 is: 76,799.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,678.52 : 136,167.84 = 55,655.64 : x
  2. Step 2: Convert to fraction form
    98,678.52/136,167.84 = 55,655.64/x
  3. Step 3: Cross multiply
    98,678.52x = 136,167.84 × 55,655.64
  4. Step 4: Simplify right side
    98,678.52x = 7,578,508,282.62
  5. Step 5: Solve for x
    x = 7,578,508,282.62/98,678.52
  6. Step 6: Final answer
    x = 76,799.98

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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.