Home / 56,821.28-78,416.88-31,327.52

Finding the Fourth Proportional to 56,821.28, 78,416.88 and 31,327.52

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Solution

The fourth proportional to 56,821.28, 78,416.88 and 31,327.52 is: 43,233.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,821.28 : 78,416.88 = 31,327.52 : x
  2. Step 2: Convert to fraction form
    56,821.28/78,416.88 = 31,327.52/x
  3. Step 3: Cross multiply
    56,821.28x = 78,416.88 × 31,327.52
  4. Step 4: Simplify right side
    56,821.28x = 2,456,606,376.54
  5. Step 5: Solve for x
    x = 2,456,606,376.54/56,821.28
  6. Step 6: Final answer
    x = 43,233.91

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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.