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Finding the Fourth Proportional to 91,205.39, 136,693.88 and 48,981.71

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Solution

The fourth proportional to 91,205.39, 136,693.88 and 48,981.71 is: 73,411.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,205.39 : 136,693.88 = 48,981.71 : x
  2. Step 2: Convert to fraction form
    91,205.39/136,693.88 = 48,981.71/x
  3. Step 3: Cross multiply
    91,205.39x = 136,693.88 × 48,981.71
  4. Step 4: Simplify right side
    91,205.39x = 6,695,500,269.44
  5. Step 5: Solve for x
    x = 6,695,500,269.44/91,205.39
  6. Step 6: Final answer
    x = 73,411.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.