Home / 39,279.13-54,260.69-30,440.61

Finding the Fourth Proportional to 39,279.13, 54,260.69 and 30,440.61

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Solution

The fourth proportional to 39,279.13, 54,260.69 and 30,440.61 is: 42,051.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.13 : 54,260.69 = 30,440.61 : x
  2. Step 2: Convert to fraction form
    39,279.13/54,260.69 = 30,440.61/x
  3. Step 3: Cross multiply
    39,279.13x = 54,260.69 × 30,440.61
  4. Step 4: Simplify right side
    39,279.13x = 1,651,728,350.42
  5. Step 5: Solve for x
    x = 1,651,728,350.42/39,279.13
  6. Step 6: Final answer
    x = 42,051.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.