Home / 55,761.40-83,650.20-18,315.10

Finding the Fourth Proportional to 55,761.40, 83,650.20 and 18,315.10

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Solution

The fourth proportional to 55,761.40, 83,650.20 and 18,315.10 is: 27,475.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,761.40 : 83,650.20 = 18,315.10 : x
  2. Step 2: Convert to fraction form
    55,761.40/83,650.20 = 18,315.10/x
  3. Step 3: Cross multiply
    55,761.40x = 83,650.20 × 18,315.10
  4. Step 4: Simplify right side
    55,761.40x = 1,532,061,778.02
  5. Step 5: Solve for x
    x = 1,532,061,778.02/55,761.40
  6. Step 6: Final answer
    x = 27,475.31

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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.