Home / 90,031.70-135,047.66-23,471.78

Finding the Fourth Proportional to 90,031.70, 135,047.66 and 23,471.78

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Solution

The fourth proportional to 90,031.70, 135,047.66 and 23,471.78 is: 35,207.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,031.70 : 135,047.66 = 23,471.78 : x
  2. Step 2: Convert to fraction form
    90,031.70/135,047.66 = 23,471.78/x
  3. Step 3: Cross multiply
    90,031.70x = 135,047.66 × 23,471.78
  4. Step 4: Simplify right side
    90,031.70x = 3,169,808,172.44
  5. Step 5: Solve for x
    x = 3,169,808,172.44/90,031.70
  6. Step 6: Final answer
    x = 35,207.69

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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.