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Finding the Fourth Proportional to 79,275.28, 109,401.14 and 47,445.52

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Solution

The fourth proportional to 79,275.28, 109,401.14 and 47,445.52 is: 65,475.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,275.28 : 109,401.14 = 47,445.52 : x
  2. Step 2: Convert to fraction form
    79,275.28/109,401.14 = 47,445.52/x
  3. Step 3: Cross multiply
    79,275.28x = 109,401.14 × 47,445.52
  4. Step 4: Simplify right side
    79,275.28x = 5,190,593,975.89
  5. Step 5: Solve for x
    x = 5,190,593,975.89/79,275.28
  6. Step 6: Final answer
    x = 65,475.57

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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.