Home / 56,921.80-85,350.70-21,862.60

Finding the Fourth Proportional to 56,921.80, 85,350.70 and 21,862.60

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Solution

The fourth proportional to 56,921.80, 85,350.70 and 21,862.60 is: 32,781.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,921.80 : 85,350.70 = 21,862.60 : x
  2. Step 2: Convert to fraction form
    56,921.80/85,350.70 = 21,862.60/x
  3. Step 3: Cross multiply
    56,921.80x = 85,350.70 × 21,862.60
  4. Step 4: Simplify right side
    56,921.80x = 1,865,988,213.82
  5. Step 5: Solve for x
    x = 1,865,988,213.82/56,921.80
  6. Step 6: Final answer
    x = 32,781.61

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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.