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Finding the Fourth Proportional to 79,752.37, 109,981.51 and 52,479.67

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Solution

The fourth proportional to 79,752.37, 109,981.51 and 52,479.67 is: 72,371.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,752.37 : 109,981.51 = 52,479.67 : x
  2. Step 2: Convert to fraction form
    79,752.37/109,981.51 = 52,479.67/x
  3. Step 3: Cross multiply
    79,752.37x = 109,981.51 × 52,479.67
  4. Step 4: Simplify right side
    79,752.37x = 5,771,793,350.90
  5. Step 5: Solve for x
    x = 5,771,793,350.90/79,752.37
  6. Step 6: Final answer
    x = 72,371.43

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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.