Home / 90,300.52-135,510.78-40,363.72

Finding the Fourth Proportional to 90,300.52, 135,510.78 and 40,363.72

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Solution

The fourth proportional to 90,300.52, 135,510.78 and 40,363.72 is: 60,572.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,300.52 : 135,510.78 = 40,363.72 : x
  2. Step 2: Convert to fraction form
    90,300.52/135,510.78 = 40,363.72/x
  3. Step 3: Cross multiply
    90,300.52x = 135,510.78 × 40,363.72
  4. Step 4: Simplify right side
    90,300.52x = 5,469,719,180.90
  5. Step 5: Solve for x
    x = 5,469,719,180.90/90,300.52
  6. Step 6: Final answer
    x = 60,572.40

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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.