Home / 75,239.43-103,839.05-42,979.13

Finding the Fourth Proportional to 75,239.43, 103,839.05 and 42,979.13

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Solution

The fourth proportional to 75,239.43, 103,839.05 and 42,979.13 is: 59,316.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,239.43 : 103,839.05 = 42,979.13 : x
  2. Step 2: Convert to fraction form
    75,239.43/103,839.05 = 42,979.13/x
  3. Step 3: Cross multiply
    75,239.43x = 103,839.05 × 42,979.13
  4. Step 4: Simplify right side
    75,239.43x = 4,462,911,294.94
  5. Step 5: Solve for x
    x = 4,462,911,294.94/75,239.43
  6. Step 6: Final answer
    x = 59,316.12

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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.