Home / 57,278.73-79,045.11-31,785.21

Finding the Fourth Proportional to 57,278.73, 79,045.11 and 31,785.21

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Solution

The fourth proportional to 57,278.73, 79,045.11 and 31,785.21 is: 43,863.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,278.73 : 79,045.11 = 31,785.21 : x
  2. Step 2: Convert to fraction form
    57,278.73/79,045.11 = 31,785.21/x
  3. Step 3: Cross multiply
    57,278.73x = 79,045.11 × 31,785.21
  4. Step 4: Simplify right side
    57,278.73x = 2,512,465,420.82
  5. Step 5: Solve for x
    x = 2,512,465,420.82/57,278.73
  6. Step 6: Final answer
    x = 43,863.85

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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.