Home / 87,854.78-121,239.67-47,568.57

Finding the Fourth Proportional to 87,854.78, 121,239.67 and 47,568.57

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Solution

The fourth proportional to 87,854.78, 121,239.67 and 47,568.57 is: 65,644.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,854.78 : 121,239.67 = 47,568.57 : x
  2. Step 2: Convert to fraction form
    87,854.78/121,239.67 = 47,568.57/x
  3. Step 3: Cross multiply
    87,854.78x = 121,239.67 × 47,568.57
  4. Step 4: Simplify right side
    87,854.78x = 5,767,197,244.79
  5. Step 5: Solve for x
    x = 5,767,197,244.79/87,854.78
  6. Step 6: Final answer
    x = 65,644.66

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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.