Home / 56,185.80-84,281.94-21,125.76

Finding the Fourth Proportional to 56,185.80, 84,281.94 and 21,125.76

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Solution

The fourth proportional to 56,185.80, 84,281.94 and 21,125.76 is: 31,689.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,185.80 : 84,281.94 = 21,125.76 : x
  2. Step 2: Convert to fraction form
    56,185.80/84,281.94 = 21,125.76/x
  3. Step 3: Cross multiply
    56,185.80x = 84,281.94 × 21,125.76
  4. Step 4: Simplify right side
    56,185.80x = 1,780,520,254.22
  5. Step 5: Solve for x
    x = 1,780,520,254.22/56,185.80
  6. Step 6: Final answer
    x = 31,689.86

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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.