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Finding the Fourth Proportional to 79,407.74, 109,551.42 and 45,397.95

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Solution

The fourth proportional to 79,407.74, 109,551.42 and 45,397.95 is: 62,631.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,407.74 : 109,551.42 = 45,397.95 : x
  2. Step 2: Convert to fraction form
    79,407.74/109,551.42 = 45,397.95/x
  3. Step 3: Cross multiply
    79,407.74x = 109,551.42 × 45,397.95
  4. Step 4: Simplify right side
    79,407.74x = 4,973,409,693.90
  5. Step 5: Solve for x
    x = 4,973,409,693.90/79,407.74
  6. Step 6: Final answer
    x = 62,631.30

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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.