Home / 80,661.12-120,825.23-47,279.82

Finding the Fourth Proportional to 80,661.12, 120,825.23 and 47,279.82

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Solution

The fourth proportional to 80,661.12, 120,825.23 and 47,279.82 is: 70,822.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,661.12 : 120,825.23 = 47,279.82 : x
  2. Step 2: Convert to fraction form
    80,661.12/120,825.23 = 47,279.82/x
  3. Step 3: Cross multiply
    80,661.12x = 120,825.23 × 47,279.82
  4. Step 4: Simplify right side
    80,661.12x = 5,712,594,889.46
  5. Step 5: Solve for x
    x = 5,712,594,889.46/80,661.12
  6. Step 6: Final answer
    x = 70,822.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.