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Finding the Fourth Proportional to 91,153.55, 136,729.76 and 49,053.47

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Solution

The fourth proportional to 91,153.55, 136,729.76 and 49,053.47 is: 73,579.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,153.55 : 136,729.76 = 49,053.47 : x
  2. Step 2: Convert to fraction form
    91,153.55/136,729.76 = 49,053.47/x
  3. Step 3: Cross multiply
    91,153.55x = 136,729.76 × 49,053.47
  4. Step 4: Simplify right side
    91,153.55x = 6,707,068,251.35
  5. Step 5: Solve for x
    x = 6,707,068,251.35/91,153.55
  6. Step 6: Final answer
    x = 73,579.89

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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.