Home / 90,397.72-135,604.14-31,209.40

Finding the Fourth Proportional to 90,397.72, 135,604.14 and 31,209.40

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Solution

The fourth proportional to 90,397.72, 135,604.14 and 31,209.40 is: 46,816.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,397.72 : 135,604.14 = 31,209.40 : x
  2. Step 2: Convert to fraction form
    90,397.72/135,604.14 = 31,209.40/x
  3. Step 3: Cross multiply
    90,397.72x = 135,604.14 × 31,209.40
  4. Step 4: Simplify right side
    90,397.72x = 4,232,123,846.92
  5. Step 5: Solve for x
    x = 4,232,123,846.92/90,397.72
  6. Step 6: Final answer
    x = 46,816.71

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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.