Home / 57,150.27-85,731.05-19,705.42

Finding the Fourth Proportional to 57,150.27, 85,731.05 and 19,705.42

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Solution

The fourth proportional to 57,150.27, 85,731.05 and 19,705.42 is: 29,560.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,150.27 : 85,731.05 = 19,705.42 : x
  2. Step 2: Convert to fraction form
    57,150.27/85,731.05 = 19,705.42/x
  3. Step 3: Cross multiply
    57,150.27x = 85,731.05 × 19,705.42
  4. Step 4: Simplify right side
    57,150.27x = 1,689,366,347.29
  5. Step 5: Solve for x
    x = 1,689,366,347.29/57,150.27
  6. Step 6: Final answer
    x = 29,560.08

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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.