Home / 87,255.10-130,903.15-28,088.55

Finding the Fourth Proportional to 87,255.10, 130,903.15 and 28,088.55

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Solution

The fourth proportional to 87,255.10, 130,903.15 and 28,088.55 is: 42,139.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,255.10 : 130,903.15 = 28,088.55 : x
  2. Step 2: Convert to fraction form
    87,255.10/130,903.15 = 28,088.55/x
  3. Step 3: Cross multiply
    87,255.10x = 130,903.15 × 28,088.55
  4. Step 4: Simplify right side
    87,255.10x = 3,676,879,673.93
  5. Step 5: Solve for x
    x = 3,676,879,673.93/87,255.10
  6. Step 6: Final answer
    x = 42,139.42

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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.