Home / 52,477.20-78,715.80-30,279.15

Finding the Fourth Proportional to 52,477.20, 78,715.80 and 30,279.15

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Solution

The fourth proportional to 52,477.20, 78,715.80 and 30,279.15 is: 45,418.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,477.20 : 78,715.80 = 30,279.15 : x
  2. Step 2: Convert to fraction form
    52,477.20/78,715.80 = 30,279.15/x
  3. Step 3: Cross multiply
    52,477.20x = 78,715.80 × 30,279.15
  4. Step 4: Simplify right side
    52,477.20x = 2,383,447,515.57
  5. Step 5: Solve for x
    x = 2,383,447,515.57/52,477.20
  6. Step 6: Final answer
    x = 45,418.73

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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.