Home / 83,486.33-115,109.64-58,013.85

Finding the Fourth Proportional to 83,486.33, 115,109.64 and 58,013.85

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Solution

The fourth proportional to 83,486.33, 115,109.64 and 58,013.85 is: 79,988.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,486.33 : 115,109.64 = 58,013.85 : x
  2. Step 2: Convert to fraction form
    83,486.33/115,109.64 = 58,013.85/x
  3. Step 3: Cross multiply
    83,486.33x = 115,109.64 × 58,013.85
  4. Step 4: Simplify right side
    83,486.33x = 6,677,953,820.18
  5. Step 5: Solve for x
    x = 6,677,953,820.18/83,486.33
  6. Step 6: Final answer
    x = 79,988.59

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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.