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Finding the Fourth Proportional to 79,269.84, 109,356.48 and 63,376.56

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Solution

The fourth proportional to 79,269.84, 109,356.48 and 63,376.56 is: 87,430.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,269.84 : 109,356.48 = 63,376.56 : x
  2. Step 2: Convert to fraction form
    79,269.84/109,356.48 = 63,376.56/x
  3. Step 3: Cross multiply
    79,269.84x = 109,356.48 × 63,376.56
  4. Step 4: Simplify right side
    79,269.84x = 6,930,637,516.11
  5. Step 5: Solve for x
    x = 6,930,637,516.11/79,269.84
  6. Step 6: Final answer
    x = 87,430.95

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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.