Home / 90,757.44-136,143.36-28,427.76

Finding the Fourth Proportional to 90,757.44, 136,143.36 and 28,427.76

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Solution

The fourth proportional to 90,757.44, 136,143.36 and 28,427.76 is: 42,643.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,757.44 : 136,143.36 = 28,427.76 : x
  2. Step 2: Convert to fraction form
    90,757.44/136,143.36 = 28,427.76/x
  3. Step 3: Cross multiply
    90,757.44x = 136,143.36 × 28,427.76
  4. Step 4: Simplify right side
    90,757.44x = 3,870,250,763.67
  5. Step 5: Solve for x
    x = 3,870,250,763.67/90,757.44
  6. Step 6: Final answer
    x = 42,643.90

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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.