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Finding the Fourth Proportional to 91,750.86, 126,607.70 and 51,456.86

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Solution

The fourth proportional to 91,750.86, 126,607.70 and 51,456.86 is: 71,005.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,750.86 : 126,607.70 = 51,456.86 : x
  2. Step 2: Convert to fraction form
    91,750.86/126,607.70 = 51,456.86/x
  3. Step 3: Cross multiply
    91,750.86x = 126,607.70 × 51,456.86
  4. Step 4: Simplify right side
    91,750.86x = 6,514,834,693.82
  5. Step 5: Solve for x
    x = 6,514,834,693.82/91,750.86
  6. Step 6: Final answer
    x = 71,005.71

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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.