Home / 54,128.48-74,691.60-31,463.36

Finding the Fourth Proportional to 54,128.48, 74,691.60 and 31,463.36

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Solution

The fourth proportional to 54,128.48, 74,691.60 and 31,463.36 is: 43,416.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,128.48 : 74,691.60 = 31,463.36 : x
  2. Step 2: Convert to fraction form
    54,128.48/74,691.60 = 31,463.36/x
  3. Step 3: Cross multiply
    54,128.48x = 74,691.60 × 31,463.36
  4. Step 4: Simplify right side
    54,128.48x = 2,350,048,699.78
  5. Step 5: Solve for x
    x = 2,350,048,699.78/54,128.48
  6. Step 6: Final answer
    x = 43,416.12

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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.