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Finding the Fourth Proportional to 91,856.76, 126,752.54 and 51,574.92

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Solution

The fourth proportional to 91,856.76, 126,752.54 and 51,574.92 is: 71,167.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,856.76 : 126,752.54 = 51,574.92 : x
  2. Step 2: Convert to fraction form
    91,856.76/126,752.54 = 51,574.92/x
  3. Step 3: Cross multiply
    91,856.76x = 126,752.54 × 51,574.92
  4. Step 4: Simplify right side
    91,856.76x = 6,537,251,476.53
  5. Step 5: Solve for x
    x = 6,537,251,476.53/91,856.76
  6. Step 6: Final answer
    x = 71,167.89

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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.