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Finding the Fourth Proportional to 79,376.76, 109,544.85 and 52,472.61

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Solution

The fourth proportional to 79,376.76, 109,544.85 and 52,472.61 is: 72,415.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,376.76 : 109,544.85 = 52,472.61 : x
  2. Step 2: Convert to fraction form
    79,376.76/109,544.85 = 52,472.61/x
  3. Step 3: Cross multiply
    79,376.76x = 109,544.85 × 52,472.61
  4. Step 4: Simplify right side
    79,376.76x = 5,748,104,191.56
  5. Step 5: Solve for x
    x = 5,748,104,191.56/79,376.76
  6. Step 6: Final answer
    x = 72,415.45

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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.