Home / 56,988.47-78,644.33-31,147.53

Finding the Fourth Proportional to 56,988.47, 78,644.33 and 31,147.53

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Solution

The fourth proportional to 56,988.47, 78,644.33 and 31,147.53 is: 42,983.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,988.47 : 78,644.33 = 31,147.53 : x
  2. Step 2: Convert to fraction form
    56,988.47/78,644.33 = 31,147.53/x
  3. Step 3: Cross multiply
    56,988.47x = 78,644.33 × 31,147.53
  4. Step 4: Simplify right side
    56,988.47x = 2,449,576,472.27
  5. Step 5: Solve for x
    x = 2,449,576,472.27/56,988.47
  6. Step 6: Final answer
    x = 42,983.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.