Home / 56,512.56-77,990.40-31,362.60

Finding the Fourth Proportional to 56,512.56, 77,990.40 and 31,362.60

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Solution

The fourth proportional to 56,512.56, 77,990.40 and 31,362.60 is: 43,282.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,512.56 : 77,990.40 = 31,362.60 : x
  2. Step 2: Convert to fraction form
    56,512.56/77,990.40 = 31,362.60/x
  3. Step 3: Cross multiply
    56,512.56x = 77,990.40 × 31,362.60
  4. Step 4: Simplify right side
    56,512.56x = 2,445,981,719.04
  5. Step 5: Solve for x
    x = 2,445,981,719.04/56,512.56
  6. Step 6: Final answer
    x = 43,282.09

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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.