Home / 56,917.76-78,537.12-31,767.20

Finding the Fourth Proportional to 56,917.76, 78,537.12 and 31,767.20

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Solution

The fourth proportional to 56,917.76, 78,537.12 and 31,767.20 is: 43,833.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,917.76 : 78,537.12 = 31,767.20 : x
  2. Step 2: Convert to fraction form
    56,917.76/78,537.12 = 31,767.20/x
  3. Step 3: Cross multiply
    56,917.76x = 78,537.12 × 31,767.20
  4. Step 4: Simplify right side
    56,917.76x = 2,494,904,398.46
  5. Step 5: Solve for x
    x = 2,494,904,398.46/56,917.76
  6. Step 6: Final answer
    x = 43,833.50

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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.