Home / 87,345.20-131,075.40-31,941.20

Finding the Fourth Proportional to 87,345.20, 131,075.40 and 31,941.20

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Solution

The fourth proportional to 87,345.20, 131,075.40 and 31,941.20 is: 47,932.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,345.20 : 131,075.40 = 31,941.20 : x
  2. Step 2: Convert to fraction form
    87,345.20/131,075.40 = 31,941.20/x
  3. Step 3: Cross multiply
    87,345.20x = 131,075.40 × 31,941.20
  4. Step 4: Simplify right side
    87,345.20x = 4,186,705,566.48
  5. Step 5: Solve for x
    x = 4,186,705,566.48/87,345.20
  6. Step 6: Final answer
    x = 47,932.86

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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.