Home / 87,715.78-121,047.56-47,429.42

Finding the Fourth Proportional to 87,715.78, 121,047.56 and 47,429.42

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Solution

The fourth proportional to 87,715.78, 121,047.56 and 47,429.42 is: 65,452.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,715.78 : 121,047.56 = 47,429.42 : x
  2. Step 2: Convert to fraction form
    87,715.78/121,047.56 = 47,429.42/x
  3. Step 3: Cross multiply
    87,715.78x = 121,047.56 × 47,429.42
  4. Step 4: Simplify right side
    87,715.78x = 5,741,215,165.48
  5. Step 5: Solve for x
    x = 5,741,215,165.48/87,715.78
  6. Step 6: Final answer
    x = 65,452.48

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1.5x scale

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.