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Finding the Fourth Proportional to 91,146.78, 125,808.95 and 52,914.92

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Solution

The fourth proportional to 91,146.78, 125,808.95 and 52,914.92 is: 73,037.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,146.78 : 125,808.95 = 52,914.92 : x
  2. Step 2: Convert to fraction form
    91,146.78/125,808.95 = 52,914.92/x
  3. Step 3: Cross multiply
    91,146.78x = 125,808.95 × 52,914.92
  4. Step 4: Simplify right side
    91,146.78x = 6,657,169,630.91
  5. Step 5: Solve for x
    x = 6,657,169,630.91/91,146.78
  6. Step 6: Final answer
    x = 73,037.90

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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.