Home / 79,142.57-109,227.17-45,143.27

Finding the Fourth Proportional to 79,142.57, 109,227.17 and 45,143.27

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Solution

The fourth proportional to 79,142.57, 109,227.17 and 45,143.27 is: 62,303.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,142.57 : 109,227.17 = 45,143.27 : x
  2. Step 2: Convert to fraction form
    79,142.57/109,227.17 = 45,143.27/x
  3. Step 3: Cross multiply
    79,142.57x = 109,227.17 × 45,143.27
  4. Step 4: Simplify right side
    79,142.57x = 4,930,871,626.65
  5. Step 5: Solve for x
    x = 4,930,871,626.65/79,142.57
  6. Step 6: Final answer
    x = 62,303.66

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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.