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Finding the Fourth Proportional to 79,320.66, 109,447.35 and 45,339.91

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Solution

The fourth proportional to 79,320.66, 109,447.35 and 45,339.91 is: 62,560.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,320.66 : 109,447.35 = 45,339.91 : x
  2. Step 2: Convert to fraction form
    79,320.66/109,447.35 = 45,339.91/x
  3. Step 3: Cross multiply
    79,320.66x = 109,447.35 × 45,339.91
  4. Step 4: Simplify right side
    79,320.66x = 4,962,332,998.74
  5. Step 5: Solve for x
    x = 4,962,332,998.74/79,320.66
  6. Step 6: Final answer
    x = 62,560.41

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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.