Home / 56,190.40-84,252.76-21,132.80

Finding the Fourth Proportional to 56,190.40, 84,252.76 and 21,132.80

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Solution

The fourth proportional to 56,190.40, 84,252.76 and 21,132.80 is: 31,686.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,190.40 : 84,252.76 = 21,132.80 : x
  2. Step 2: Convert to fraction form
    56,190.40/84,252.76 = 21,132.80/x
  3. Step 3: Cross multiply
    56,190.40x = 84,252.76 × 21,132.80
  4. Step 4: Simplify right side
    56,190.40x = 1,780,496,726.53
  5. Step 5: Solve for x
    x = 1,780,496,726.53/56,190.40
  6. Step 6: Final answer
    x = 31,686.85

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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.