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Finding the Fourth Proportional to 91,424.76, 126,177.84 and 51,140.76

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Solution

The fourth proportional to 91,424.76, 126,177.84 and 51,140.76 is: 70,580.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,424.76 : 126,177.84 = 51,140.76 : x
  2. Step 2: Convert to fraction form
    91,424.76/126,177.84 = 51,140.76/x
  3. Step 3: Cross multiply
    91,424.76x = 126,177.84 × 51,140.76
  4. Step 4: Simplify right side
    91,424.76x = 6,452,830,632.76
  5. Step 5: Solve for x
    x = 6,452,830,632.76/91,424.76
  6. Step 6: Final answer
    x = 70,580.78

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1.5x scale

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.