Home / 91,877.10-126,781.58-51,581.63

Finding the Fourth Proportional to 91,877.10, 126,781.58 and 51,581.63

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Solution

The fourth proportional to 91,877.10, 126,781.58 and 51,581.63 is: 71,177.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,877.10 : 126,781.58 = 51,581.63 : x
  2. Step 2: Convert to fraction form
    91,877.10/126,781.58 = 51,581.63/x
  3. Step 3: Cross multiply
    91,877.10x = 126,781.58 × 51,581.63
  4. Step 4: Simplify right side
    91,877.10x = 6,539,599,658.56
  5. Step 5: Solve for x
    x = 6,539,599,658.56/91,877.10
  6. Step 6: Final answer
    x = 71,177.69

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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.