Home / 56,724-78,279.12-31,572.96

Finding the Fourth Proportional to 56,724, 78,279.12 and 31,572.96

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Solution

The fourth proportional to 56,724, 78,279.12 and 31,572.96 is: 43,570.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,724 : 78,279.12 = 31,572.96 : x
  2. Step 2: Convert to fraction form
    56,724/78,279.12 = 31,572.96/x
  3. Step 3: Cross multiply
    56,724x = 78,279.12 × 31,572.96
  4. Step 4: Simplify right side
    56,724x = 2,471,503,524.60
  5. Step 5: Solve for x
    x = 2,471,503,524.60/56,724
  6. Step 6: Final answer
    x = 43,570.68

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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.