Home / 87,278.10-130,927.41-31,126.20

Finding the Fourth Proportional to 87,278.10, 130,927.41 and 31,126.20

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Solution

The fourth proportional to 87,278.10, 130,927.41 and 31,126.20 is: 46,692.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,278.10 : 130,927.41 = 31,126.20 : x
  2. Step 2: Convert to fraction form
    87,278.10/130,927.41 = 31,126.20/x
  3. Step 3: Cross multiply
    87,278.10x = 130,927.41 × 31,126.20
  4. Step 4: Simplify right side
    87,278.10x = 4,075,272,749.14
  5. Step 5: Solve for x
    x = 4,075,272,749.14/87,278.10
  6. Step 6: Final answer
    x = 46,692.96

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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.