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Finding the Fourth Proportional to 79,343.80, 109,494.43 and 45,353.01

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Solution

The fourth proportional to 79,343.80, 109,494.43 and 45,353.01 is: 62,587.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,343.80 : 109,494.43 = 45,353.01 : x
  2. Step 2: Convert to fraction form
    79,343.80/109,494.43 = 45,353.01/x
  3. Step 3: Cross multiply
    79,343.80x = 109,494.43 × 45,353.01
  4. Step 4: Simplify right side
    79,343.80x = 4,965,901,978.73
  5. Step 5: Solve for x
    x = 4,965,901,978.73/79,343.80
  6. Step 6: Final answer
    x = 62,587.15

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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.