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Finding the Fourth Proportional to 91,550.70, 137,345.63 and 28,369.41

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Solution

The fourth proportional to 91,550.70, 137,345.63 and 28,369.41 is: 42,560.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,550.70 : 137,345.63 = 28,369.41 : x
  2. Step 2: Convert to fraction form
    91,550.70/137,345.63 = 28,369.41/x
  3. Step 3: Cross multiply
    91,550.70x = 137,345.63 × 28,369.41
  4. Step 4: Simplify right side
    91,550.70x = 3,896,414,347.33
  5. Step 5: Solve for x
    x = 3,896,414,347.33/91,550.70
  6. Step 6: Final answer
    x = 42,560.18

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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.