Home / 87,738.63-121,079.31-47,452.40

Finding the Fourth Proportional to 87,738.63, 121,079.31 and 47,452.40

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Solution

The fourth proportional to 87,738.63, 121,079.31 and 47,452.40 is: 65,484.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,738.63 : 121,079.31 = 47,452.40 : x
  2. Step 2: Convert to fraction form
    87,738.63/121,079.31 = 47,452.40/x
  3. Step 3: Cross multiply
    87,738.63x = 121,079.31 × 47,452.40
  4. Step 4: Simplify right side
    87,738.63x = 5,745,503,244.45
  5. Step 5: Solve for x
    x = 5,745,503,244.45/87,738.63
  6. Step 6: Final answer
    x = 65,484.31

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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.