Home / 90,711.50-136,020.60-40,748.74

Finding the Fourth Proportional to 90,711.50, 136,020.60 and 40,748.74

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Solution

The fourth proportional to 90,711.50, 136,020.60 and 40,748.74 is: 61,102.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,711.50 : 136,020.60 = 40,748.74 : x
  2. Step 2: Convert to fraction form
    90,711.50/136,020.60 = 40,748.74/x
  3. Step 3: Cross multiply
    90,711.50x = 136,020.60 × 40,748.74
  4. Step 4: Simplify right side
    90,711.50x = 5,542,667,723.99
  5. Step 5: Solve for x
    x = 5,542,667,723.99/90,711.50
  6. Step 6: Final answer
    x = 61,102.15

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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.