Home / 87,031.53-120,075.15-50,724.69

Finding the Fourth Proportional to 87,031.53, 120,075.15 and 50,724.69

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Solution

The fourth proportional to 87,031.53, 120,075.15 and 50,724.69 is: 69,983.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,031.53 : 120,075.15 = 50,724.69 : x
  2. Step 2: Convert to fraction form
    87,031.53/120,075.15 = 50,724.69/x
  3. Step 3: Cross multiply
    87,031.53x = 120,075.15 × 50,724.69
  4. Step 4: Simplify right side
    87,031.53x = 6,090,774,760.45
  5. Step 5: Solve for x
    x = 6,090,774,760.45/87,031.53
  6. Step 6: Final answer
    x = 69,983.54

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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.