Home / 56,711.31-78,262.11-31,560.81

Finding the Fourth Proportional to 56,711.31, 78,262.11 and 31,560.81

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Solution

The fourth proportional to 56,711.31, 78,262.11 and 31,560.81 is: 43,554.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,711.31 : 78,262.11 = 31,560.81 : x
  2. Step 2: Convert to fraction form
    56,711.31/78,262.11 = 31,560.81/x
  3. Step 3: Cross multiply
    56,711.31x = 78,262.11 × 31,560.81
  4. Step 4: Simplify right side
    56,711.31x = 2,470,015,583.91
  5. Step 5: Solve for x
    x = 2,470,015,583.91/56,711.31
  6. Step 6: Final answer
    x = 43,554.20

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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.