Home / 87,256.57-130,857.12-28,078.48

Finding the Fourth Proportional to 87,256.57, 130,857.12 and 28,078.48

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Solution

The fourth proportional to 87,256.57, 130,857.12 and 28,078.48 is: 42,108.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,256.57 : 130,857.12 = 28,078.48 : x
  2. Step 2: Convert to fraction form
    87,256.57/130,857.12 = 28,078.48/x
  3. Step 3: Cross multiply
    87,256.57x = 130,857.12 × 28,078.48
  4. Step 4: Simplify right side
    87,256.57x = 3,674,269,026.78
  5. Step 5: Solve for x
    x = 3,674,269,026.78/87,256.57
  6. Step 6: Final answer
    x = 42,108.80

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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.