Home / 55,456.78-76,521.51-31,583.90

Finding the Fourth Proportional to 55,456.78, 76,521.51 and 31,583.90

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Solution

The fourth proportional to 55,456.78, 76,521.51 and 31,583.90 is: 43,580.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,456.78 : 76,521.51 = 31,583.90 : x
  2. Step 2: Convert to fraction form
    55,456.78/76,521.51 = 31,583.90/x
  3. Step 3: Cross multiply
    55,456.78x = 76,521.51 × 31,583.90
  4. Step 4: Simplify right side
    55,456.78x = 2,416,847,719.69
  5. Step 5: Solve for x
    x = 2,416,847,719.69/55,456.78
  6. Step 6: Final answer
    x = 43,580.74

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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.