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Finding the Fourth Proportional to 79,345.80, 109,490.13 and 45,347.54

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Solution

The fourth proportional to 79,345.80, 109,490.13 and 45,347.54 is: 62,575.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,345.80 : 109,490.13 = 45,347.54 : x
  2. Step 2: Convert to fraction form
    79,345.80/109,490.13 = 45,347.54/x
  3. Step 3: Cross multiply
    79,345.80x = 109,490.13 × 45,347.54
  4. Step 4: Simplify right side
    79,345.80x = 4,965,107,502.33
  5. Step 5: Solve for x
    x = 4,965,107,502.33/79,345.80
  6. Step 6: Final answer
    x = 62,575.56

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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.