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Finding the Fourth Proportional to 91,589.80, 126,395.94 and 51,306.52

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Solution

The fourth proportional to 91,589.80, 126,395.94 and 51,306.52 is: 70,804.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,589.80 : 126,395.94 = 51,306.52 : x
  2. Step 2: Convert to fraction form
    91,589.80/126,395.94 = 51,306.52/x
  3. Step 3: Cross multiply
    91,589.80x = 126,395.94 × 51,306.52
  4. Step 4: Simplify right side
    91,589.80x = 6,484,935,823.53
  5. Step 5: Solve for x
    x = 6,484,935,823.53/91,589.80
  6. Step 6: Final answer
    x = 70,804.13

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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.