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Finding the Fourth Proportional to 91,325.73, 126,109.68 and 57,393

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Solution

The fourth proportional to 91,325.73, 126,109.68 and 57,393 is: 79,252.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,325.73 : 126,109.68 = 57,393 : x
  2. Step 2: Convert to fraction form
    91,325.73/126,109.68 = 57,393/x
  3. Step 3: Cross multiply
    91,325.73x = 126,109.68 × 57,393
  4. Step 4: Simplify right side
    91,325.73x = 7,237,812,864.24
  5. Step 5: Solve for x
    x = 7,237,812,864.24/91,325.73
  6. Step 6: Final answer
    x = 79,252.72

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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.