Home / 56,405.76-77,836.32-31,254.72

Finding the Fourth Proportional to 56,405.76, 77,836.32 and 31,254.72

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Solution

The fourth proportional to 56,405.76, 77,836.32 and 31,254.72 is: 43,129.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,405.76 : 77,836.32 = 31,254.72 : x
  2. Step 2: Convert to fraction form
    56,405.76/77,836.32 = 31,254.72/x
  3. Step 3: Cross multiply
    56,405.76x = 77,836.32 × 31,254.72
  4. Step 4: Simplify right side
    56,405.76x = 2,432,752,387.43
  5. Step 5: Solve for x
    x = 2,432,752,387.43/56,405.76
  6. Step 6: Final answer
    x = 43,129.50

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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.