Home / 90,799.26-136,220.73-28,469.76

Finding the Fourth Proportional to 90,799.26, 136,220.73 and 28,469.76

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Solution

The fourth proportional to 90,799.26, 136,220.73 and 28,469.76 is: 42,711.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,799.26 : 136,220.73 = 28,469.76 : x
  2. Step 2: Convert to fraction form
    90,799.26/136,220.73 = 28,469.76/x
  3. Step 3: Cross multiply
    90,799.26x = 136,220.73 × 28,469.76
  4. Step 4: Simplify right side
    90,799.26x = 3,878,171,490.12
  5. Step 5: Solve for x
    x = 3,878,171,490.12/90,799.26
  6. Step 6: Final answer
    x = 42,711.49

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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.