Home / 87,915.11-121,322.88-47,629.15

Finding the Fourth Proportional to 87,915.11, 121,322.88 and 47,629.15

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Solution

The fourth proportional to 87,915.11, 121,322.88 and 47,629.15 is: 65,728.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.11 : 121,322.88 = 47,629.15 : x
  2. Step 2: Convert to fraction form
    87,915.11/121,322.88 = 47,629.15/x
  3. Step 3: Cross multiply
    87,915.11x = 121,322.88 × 47,629.15
  4. Step 4: Simplify right side
    87,915.11x = 5,778,505,346.64
  5. Step 5: Solve for x
    x = 5,778,505,346.64/87,915.11
  6. Step 6: Final answer
    x = 65,728.24

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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.