Home / 42,450.57-63,578.88-20,279.65

Finding the Fourth Proportional to 42,450.57, 63,578.88 and 20,279.65

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Solution

The fourth proportional to 42,450.57, 63,578.88 and 20,279.65 is: 30,373.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,450.57 : 63,578.88 = 20,279.65 : x
  2. Step 2: Convert to fraction form
    42,450.57/63,578.88 = 20,279.65/x
  3. Step 3: Cross multiply
    42,450.57x = 63,578.88 × 20,279.65
  4. Step 4: Simplify right side
    42,450.57x = 1,289,357,433.79
  5. Step 5: Solve for x
    x = 1,289,357,433.79/42,450.57
  6. Step 6: Final answer
    x = 30,373.15

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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.