Home / 79,142.06-109,226.48-45,142.77

Finding the Fourth Proportional to 79,142.06, 109,226.48 and 45,142.77

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Solution

The fourth proportional to 79,142.06, 109,226.48 and 45,142.77 is: 62,302.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,142.06 : 109,226.48 = 45,142.77 : x
  2. Step 2: Convert to fraction form
    79,142.06/109,226.48 = 45,142.77/x
  3. Step 3: Cross multiply
    79,142.06x = 109,226.48 × 45,142.77
  4. Step 4: Simplify right side
    79,142.06x = 4,930,785,434.04
  5. Step 5: Solve for x
    x = 4,930,785,434.04/79,142.06
  6. Step 6: Final answer
    x = 62,302.97

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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.