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Finding the Fourth Proportional to 79,408.74, 109,552.80 and 45,398.95

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Solution

The fourth proportional to 79,408.74, 109,552.80 and 45,398.95 is: 62,632.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,408.74 : 109,552.80 = 45,398.95 : x
  2. Step 2: Convert to fraction form
    79,408.74/109,552.80 = 45,398.95/x
  3. Step 3: Cross multiply
    79,408.74x = 109,552.80 × 45,398.95
  4. Step 4: Simplify right side
    79,408.74x = 4,973,582,089.56
  5. Step 5: Solve for x
    x = 4,973,582,089.56/79,408.74
  6. Step 6: Final answer
    x = 62,632.68

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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.