Home / 90,588.30-135,882.33-31,423.98

Finding the Fourth Proportional to 90,588.30, 135,882.33 and 31,423.98

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Solution

The fourth proportional to 90,588.30, 135,882.33 and 31,423.98 is: 47,135.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,588.30 : 135,882.33 = 31,423.98 : x
  2. Step 2: Convert to fraction form
    90,588.30/135,882.33 = 31,423.98/x
  3. Step 3: Cross multiply
    90,588.30x = 135,882.33 × 31,423.98
  4. Step 4: Simplify right side
    90,588.30x = 4,269,963,620.27
  5. Step 5: Solve for x
    x = 4,269,963,620.27/90,588.30
  6. Step 6: Final answer
    x = 47,135.93

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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.