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Finding the Fourth Proportional to 91,569.76, 126,374.30 and 51,282.88

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Solution

The fourth proportional to 91,569.76, 126,374.30 and 51,282.88 is: 70,774.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,569.76 : 126,374.30 = 51,282.88 : x
  2. Step 2: Convert to fraction form
    91,569.76/126,374.30 = 51,282.88/x
  3. Step 3: Cross multiply
    91,569.76x = 126,374.30 × 51,282.88
  4. Step 4: Simplify right side
    91,569.76x = 6,480,838,061.98
  5. Step 5: Solve for x
    x = 6,480,838,061.98/91,569.76
  6. Step 6: Final answer
    x = 70,774.87

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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.