Home / 90,875.88-136,331.10-28,564.20

Finding the Fourth Proportional to 90,875.88, 136,331.10 and 28,564.20

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Solution

The fourth proportional to 90,875.88, 136,331.10 and 28,564.20 is: 42,851.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,875.88 : 136,331.10 = 28,564.20 : x
  2. Step 2: Convert to fraction form
    90,875.88/136,331.10 = 28,564.20/x
  3. Step 3: Cross multiply
    90,875.88x = 136,331.10 × 28,564.20
  4. Step 4: Simplify right side
    90,875.88x = 3,894,188,806.62
  5. Step 5: Solve for x
    x = 3,894,188,806.62/90,875.88
  6. Step 6: Final answer
    x = 42,851.73

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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.