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Finding the Fourth Proportional to 91,797.68, 126,721.89 and 56,001.95

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Solution

The fourth proportional to 91,797.68, 126,721.89 and 56,001.95 is: 77,307.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,797.68 : 126,721.89 = 56,001.95 : x
  2. Step 2: Convert to fraction form
    91,797.68/126,721.89 = 56,001.95/x
  3. Step 3: Cross multiply
    91,797.68x = 126,721.89 × 56,001.95
  4. Step 4: Simplify right side
    91,797.68x = 7,096,672,667.68
  5. Step 5: Solve for x
    x = 7,096,672,667.68/91,797.68
  6. Step 6: Final answer
    x = 77,307.76

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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.