Home / 79,385.76-109,553.68-43,579.12

Finding the Fourth Proportional to 79,385.76, 109,553.68 and 43,579.12

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Solution

The fourth proportional to 79,385.76, 109,553.68 and 43,579.12 is: 60,139.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,385.76 : 109,553.68 = 43,579.12 : x
  2. Step 2: Convert to fraction form
    79,385.76/109,553.68 = 43,579.12/x
  3. Step 3: Cross multiply
    79,385.76x = 109,553.68 × 43,579.12
  4. Step 4: Simplify right side
    79,385.76x = 4,774,252,967.16
  5. Step 5: Solve for x
    x = 4,774,252,967.16/79,385.76
  6. Step 6: Final answer
    x = 60,139.92

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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.