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Finding the Fourth Proportional to 91,424.74, 126,177.82 and 51,140.74

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Solution

The fourth proportional to 91,424.74, 126,177.82 and 51,140.74 is: 70,580.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,424.74 : 126,177.82 = 51,140.74 : x
  2. Step 2: Convert to fraction form
    91,424.74/126,177.82 = 51,140.74/x
  3. Step 3: Cross multiply
    91,424.74x = 126,177.82 × 51,140.74
  4. Step 4: Simplify right side
    91,424.74x = 6,452,827,086.39
  5. Step 5: Solve for x
    x = 6,452,827,086.39/91,424.74
  6. Step 6: Final answer
    x = 70,580.75

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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.