Home / 57,402.29-86,021.66-42,290.56

Finding the Fourth Proportional to 57,402.29, 86,021.66 and 42,290.56

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Solution

The fourth proportional to 57,402.29, 86,021.66 and 42,290.56 is: 63,375.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,402.29 : 86,021.66 = 42,290.56 : x
  2. Step 2: Convert to fraction form
    57,402.29/86,021.66 = 42,290.56/x
  3. Step 3: Cross multiply
    57,402.29x = 86,021.66 × 42,290.56
  4. Step 4: Simplify right side
    57,402.29x = 3,637,904,173.53
  5. Step 5: Solve for x
    x = 3,637,904,173.53/57,402.29
  6. Step 6: Final answer
    x = 63,375.59

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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.