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Finding the Fourth Proportional to 91,337.86, 126,043.68 and 51,051.88

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Solution

The fourth proportional to 91,337.86, 126,043.68 and 51,051.88 is: 70,450.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,337.86 : 126,043.68 = 51,051.88 : x
  2. Step 2: Convert to fraction form
    91,337.86/126,043.68 = 51,051.88/x
  3. Step 3: Cross multiply
    91,337.86x = 126,043.68 × 51,051.88
  4. Step 4: Simplify right side
    91,337.86x = 6,434,766,826.12
  5. Step 5: Solve for x
    x = 6,434,766,826.12/91,337.86
  6. Step 6: Final answer
    x = 70,450.16

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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.