Home / 79,089.38-109,143.35-43,279.40

Finding the Fourth Proportional to 79,089.38, 109,143.35 and 43,279.40

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Solution

The fourth proportional to 79,089.38, 109,143.35 and 43,279.40 is: 59,725.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,089.38 : 109,143.35 = 43,279.40 : x
  2. Step 2: Convert to fraction form
    79,089.38/109,143.35 = 43,279.40/x
  3. Step 3: Cross multiply
    79,089.38x = 109,143.35 × 43,279.40
  4. Step 4: Simplify right side
    79,089.38x = 4,723,658,754.91
  5. Step 5: Solve for x
    x = 4,723,658,754.91/79,089.38
  6. Step 6: Final answer
    x = 59,725.58

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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.