Home / 87,840.47-121,219.82-47,554.20

Finding the Fourth Proportional to 87,840.47, 121,219.82 and 47,554.20

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Solution

The fourth proportional to 87,840.47, 121,219.82 and 47,554.20 is: 65,624.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,840.47 : 121,219.82 = 47,554.20 : x
  2. Step 2: Convert to fraction form
    87,840.47/121,219.82 = 47,554.20/x
  3. Step 3: Cross multiply
    87,840.47x = 121,219.82 × 47,554.20
  4. Step 4: Simplify right side
    87,840.47x = 5,764,511,326.47
  5. Step 5: Solve for x
    x = 5,764,511,326.47/87,840.47
  6. Step 6: Final answer
    x = 65,624.78

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1.5x scale

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.