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Finding the Fourth Proportional to 79,672.33, 109,966.51 and 45,680.19

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Solution

The fourth proportional to 79,672.33, 109,966.51 and 45,680.19 is: 63,049.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,672.33 : 109,966.51 = 45,680.19 : x
  2. Step 2: Convert to fraction form
    79,672.33/109,966.51 = 45,680.19/x
  3. Step 3: Cross multiply
    79,672.33x = 109,966.51 × 45,680.19
  4. Step 4: Simplify right side
    79,672.33x = 5,023,291,643.01
  5. Step 5: Solve for x
    x = 5,023,291,643.01/79,672.33
  6. Step 6: Final answer
    x = 63,049.39

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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.