Home / 87,915.08-121,322.66-47,629.86

Finding the Fourth Proportional to 87,915.08, 121,322.66 and 47,629.86

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Solution

The fourth proportional to 87,915.08, 121,322.66 and 47,629.86 is: 65,729.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.08 : 121,322.66 = 47,629.86 : x
  2. Step 2: Convert to fraction form
    87,915.08/121,322.66 = 47,629.86/x
  3. Step 3: Cross multiply
    87,915.08x = 121,322.66 × 47,629.86
  4. Step 4: Simplify right side
    87,915.08x = 5,778,581,310.63
  5. Step 5: Solve for x
    x = 5,778,581,310.63/87,915.08
  6. Step 6: Final answer
    x = 65,729.13

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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.