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Finding the Fourth Proportional to 79,777.13, 119,679.89 and 26,472.31

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Solution

The fourth proportional to 79,777.13, 119,679.89 and 26,472.31 is: 39,713.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,777.13 : 119,679.89 = 26,472.31 : x
  2. Step 2: Convert to fraction form
    79,777.13/119,679.89 = 26,472.31/x
  3. Step 3: Cross multiply
    79,777.13x = 119,679.89 × 26,472.31
  4. Step 4: Simplify right side
    79,777.13x = 3,168,202,735.12
  5. Step 5: Solve for x
    x = 3,168,202,735.12/79,777.13
  6. Step 6: Final answer
    x = 39,713.17

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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.