Home / 81,255.15-112,124.25-47,261.88

Finding the Fourth Proportional to 81,255.15, 112,124.25 and 47,261.88

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Solution

The fourth proportional to 81,255.15, 112,124.25 and 47,261.88 is: 65,216.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,255.15 : 112,124.25 = 47,261.88 : x
  2. Step 2: Convert to fraction form
    81,255.15/112,124.25 = 47,261.88/x
  3. Step 3: Cross multiply
    81,255.15x = 112,124.25 × 47,261.88
  4. Step 4: Simplify right side
    81,255.15x = 5,299,202,848.59
  5. Step 5: Solve for x
    x = 5,299,202,848.59/81,255.15
  6. Step 6: Final answer
    x = 65,216.82

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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.