Home / 56,407.65-77,842.40-31,257.15

Finding the Fourth Proportional to 56,407.65, 77,842.40 and 31,257.15

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Solution

The fourth proportional to 56,407.65, 77,842.40 and 31,257.15 is: 43,134.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,407.65 : 77,842.40 = 31,257.15 : x
  2. Step 2: Convert to fraction form
    56,407.65/77,842.40 = 31,257.15/x
  3. Step 3: Cross multiply
    56,407.65x = 77,842.40 × 31,257.15
  4. Step 4: Simplify right side
    56,407.65x = 2,433,131,416.87
  5. Step 5: Solve for x
    x = 2,433,131,416.87/56,407.65
  6. Step 6: Final answer
    x = 43,134.78

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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.