Home / 87,479.48-131,240.05-28,315.15

Finding the Fourth Proportional to 87,479.48, 131,240.05 and 28,315.15

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Solution

The fourth proportional to 87,479.48, 131,240.05 and 28,315.15 is: 42,479.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,479.48 : 131,240.05 = 28,315.15 : x
  2. Step 2: Convert to fraction form
    87,479.48/131,240.05 = 28,315.15/x
  3. Step 3: Cross multiply
    87,479.48x = 131,240.05 × 28,315.15
  4. Step 4: Simplify right side
    87,479.48x = 3,716,081,302.87
  5. Step 5: Solve for x
    x = 3,716,081,302.87/87,479.48
  6. Step 6: Final answer
    x = 42,479.46

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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.