Home / 87,411.78-131,075.73-40,012.20

Finding the Fourth Proportional to 87,411.78, 131,075.73 and 40,012.20

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Solution

The fourth proportional to 87,411.78, 131,075.73 and 40,012.20 is: 59,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,411.78 : 131,075.73 = 40,012.20 : x
  2. Step 2: Convert to fraction form
    87,411.78/131,075.73 = 40,012.20/x
  3. Step 3: Cross multiply
    87,411.78x = 131,075.73 × 40,012.20
  4. Step 4: Simplify right side
    87,411.78x = 5,244,628,323.91
  5. Step 5: Solve for x
    x = 5,244,628,323.91/87,411.78
  6. Step 6: Final answer
    x = 59,999.10

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1.5x scale

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.