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Finding the Fourth Proportional to 79,703.13, 109,986.48 and 43,894.65

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Solution

The fourth proportional to 79,703.13, 109,986.48 and 43,894.65 is: 60,572.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,703.13 : 109,986.48 = 43,894.65 : x
  2. Step 2: Convert to fraction form
    79,703.13/109,986.48 = 43,894.65/x
  3. Step 3: Cross multiply
    79,703.13x = 109,986.48 × 43,894.65
  4. Step 4: Simplify right side
    79,703.13x = 4,827,818,044.33
  5. Step 5: Solve for x
    x = 4,827,818,044.33/79,703.13
  6. Step 6: Final answer
    x = 60,572.50

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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.