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Finding the Fourth Proportional to 112,588, 168,839.65 and 45,992.55

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Solution

The fourth proportional to 112,588, 168,839.65 and 45,992.55 is: 68,971.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,588 : 168,839.65 = 45,992.55 : x
  2. Step 2: Convert to fraction form
    112,588/168,839.65 = 45,992.55/x
  3. Step 3: Cross multiply
    112,588x = 168,839.65 × 45,992.55
  4. Step 4: Simplify right side
    112,588x = 7,765,366,044.61
  5. Step 5: Solve for x
    x = 7,765,366,044.61/112,588
  6. Step 6: Final answer
    x = 68,971.52

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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.