Home / 57,234.20-78,983.40-31,742.92

Finding the Fourth Proportional to 57,234.20, 78,983.40 and 31,742.92

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Solution

The fourth proportional to 57,234.20, 78,983.40 and 31,742.92 is: 43,805.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,234.20 : 78,983.40 = 31,742.92 : x
  2. Step 2: Convert to fraction form
    57,234.20/78,983.40 = 31,742.92/x
  3. Step 3: Cross multiply
    57,234.20x = 78,983.40 × 31,742.92
  4. Step 4: Simplify right side
    57,234.20x = 2,507,163,965.29
  5. Step 5: Solve for x
    x = 2,507,163,965.29/57,234.20
  6. Step 6: Final answer
    x = 43,805.35

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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.