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Finding the Fourth Proportional to 98,982.95, 136,599.68 and 55,963.71

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Solution

The fourth proportional to 98,982.95, 136,599.68 and 55,963.71 is: 77,231.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,982.95 : 136,599.68 = 55,963.71 : x
  2. Step 2: Convert to fraction form
    98,982.95/136,599.68 = 55,963.71/x
  3. Step 3: Cross multiply
    98,982.95x = 136,599.68 × 55,963.71
  4. Step 4: Simplify right side
    98,982.95x = 7,644,625,017.52
  5. Step 5: Solve for x
    x = 7,644,625,017.52/98,982.95
  6. Step 6: Final answer
    x = 77,231.74

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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.