Home / 74,387.34-111,440.31-57,665.43

Finding the Fourth Proportional to 74,387.34, 111,440.31 and 57,665.43

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Solution

The fourth proportional to 74,387.34, 111,440.31 and 57,665.43 is: 86,389.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,387.34 : 111,440.31 = 57,665.43 : x
  2. Step 2: Convert to fraction form
    74,387.34/111,440.31 = 57,665.43/x
  3. Step 3: Cross multiply
    74,387.34x = 111,440.31 × 57,665.43
  4. Step 4: Simplify right side
    74,387.34x = 6,426,253,395.48
  5. Step 5: Solve for x
    x = 6,426,253,395.48/74,387.34
  6. Step 6: Final answer
    x = 86,389.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.