Home / 57,643.31-86,418.02-38,687.49

Finding the Fourth Proportional to 57,643.31, 86,418.02 and 38,687.49

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Solution

The fourth proportional to 57,643.31, 86,418.02 and 38,687.49 is: 57,999.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,643.31 : 86,418.02 = 38,687.49 : x
  2. Step 2: Convert to fraction form
    57,643.31/86,418.02 = 38,687.49/x
  3. Step 3: Cross multiply
    57,643.31x = 86,418.02 × 38,687.49
  4. Step 4: Simplify right side
    57,643.31x = 3,343,296,381.29
  5. Step 5: Solve for x
    x = 3,343,296,381.29/57,643.31
  6. Step 6: Final answer
    x = 57,999.73

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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.