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Finding the Fourth Proportional to 79,470.96, 109,670.67 and 43,661.72

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Solution

The fourth proportional to 79,470.96, 109,670.67 and 43,661.72 is: 60,253.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,470.96 : 109,670.67 = 43,661.72 : x
  2. Step 2: Convert to fraction form
    79,470.96/109,670.67 = 43,661.72/x
  3. Step 3: Cross multiply
    79,470.96x = 109,670.67 × 43,661.72
  4. Step 4: Simplify right side
    79,470.96x = 4,788,409,537.40
  5. Step 5: Solve for x
    x = 4,788,409,537.40/79,470.96
  6. Step 6: Final answer
    x = 60,253.58

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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.