Home / 75,402.18-104,079.42-54,243

Finding the Fourth Proportional to 75,402.18, 104,079.42 and 54,243

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Solution

The fourth proportional to 75,402.18, 104,079.42 and 54,243 is: 74,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,402.18 : 104,079.42 = 54,243 : x
  2. Step 2: Convert to fraction form
    75,402.18/104,079.42 = 54,243/x
  3. Step 3: Cross multiply
    75,402.18x = 104,079.42 × 54,243
  4. Step 4: Simplify right side
    75,402.18x = 5,645,579,979.06
  5. Step 5: Solve for x
    x = 5,645,579,979.06/75,402.18
  6. Step 6: Final answer
    x = 74,872.90

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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.