Home / 57,046.82-78,741.05-40,055.20

Finding the Fourth Proportional to 57,046.82, 78,741.05 and 40,055.20

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Solution

The fourth proportional to 57,046.82, 78,741.05 and 40,055.20 is: 55,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,046.82 : 78,741.05 = 40,055.20 : x
  2. Step 2: Convert to fraction form
    57,046.82/78,741.05 = 40,055.20/x
  3. Step 3: Cross multiply
    57,046.82x = 78,741.05 × 40,055.20
  4. Step 4: Simplify right side
    57,046.82x = 3,153,988,505.96
  5. Step 5: Solve for x
    x = 3,153,988,505.96/57,046.82
  6. Step 6: Final answer
    x = 55,287.72

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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.