Home / 56,729.91-78,281.87-31,235.97

Finding the Fourth Proportional to 56,729.91, 78,281.87 and 31,235.97

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Solution

The fourth proportional to 56,729.91, 78,281.87 and 31,235.97 is: 43,102.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,729.91 : 78,281.87 = 31,235.97 : x
  2. Step 2: Convert to fraction form
    56,729.91/78,281.87 = 31,235.97/x
  3. Step 3: Cross multiply
    56,729.91x = 78,281.87 × 31,235.97
  4. Step 4: Simplify right side
    56,729.91x = 2,445,209,986.68
  5. Step 5: Solve for x
    x = 2,445,209,986.68/56,729.91
  6. Step 6: Final answer
    x = 43,102.66

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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.