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Finding the Fourth Proportional to 98,614.72, 136,089.48 and 53,902.72

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Solution

The fourth proportional to 98,614.72, 136,089.48 and 53,902.72 is: 74,386.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,614.72 : 136,089.48 = 53,902.72 : x
  2. Step 2: Convert to fraction form
    98,614.72/136,089.48 = 53,902.72/x
  3. Step 3: Cross multiply
    98,614.72x = 136,089.48 × 53,902.72
  4. Step 4: Simplify right side
    98,614.72x = 7,335,593,135.39
  5. Step 5: Solve for x
    x = 7,335,593,135.39/98,614.72
  6. Step 6: Final answer
    x = 74,386.39

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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.