Home / 87,772.16-121,125.59-47,485.90

Finding the Fourth Proportional to 87,772.16, 121,125.59 and 47,485.90

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Solution

The fourth proportional to 87,772.16, 121,125.59 and 47,485.90 is: 65,530.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,772.16 : 121,125.59 = 47,485.90 : x
  2. Step 2: Convert to fraction form
    87,772.16/121,125.59 = 47,485.90/x
  3. Step 3: Cross multiply
    87,772.16x = 121,125.59 × 47,485.90
  4. Step 4: Simplify right side
    87,772.16x = 5,751,758,013.34
  5. Step 5: Solve for x
    x = 5,751,758,013.34/87,772.16
  6. Step 6: Final answer
    x = 65,530.55

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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.