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Finding the Fourth Proportional to 98,981.60, 136,562.47 and 55,956.92

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Solution

The fourth proportional to 98,981.60, 136,562.47 and 55,956.92 is: 77,202.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,981.60 : 136,562.47 = 55,956.92 : x
  2. Step 2: Convert to fraction form
    98,981.60/136,562.47 = 55,956.92/x
  3. Step 3: Cross multiply
    98,981.60x = 136,562.47 × 55,956.92
  4. Step 4: Simplify right side
    98,981.60x = 7,641,614,386.09
  5. Step 5: Solve for x
    x = 7,641,614,386.09/98,981.60
  6. Step 6: Final answer
    x = 77,202.38

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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.