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Finding the Fourth Proportional to 79,356.56, 118,750.59 and 68,719.77

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Solution

The fourth proportional to 79,356.56, 118,750.59 and 68,719.77 is: 102,833.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,356.56 : 118,750.59 = 68,719.77 : x
  2. Step 2: Convert to fraction form
    79,356.56/118,750.59 = 68,719.77/x
  3. Step 3: Cross multiply
    79,356.56x = 118,750.59 × 68,719.77
  4. Step 4: Simplify right side
    79,356.56x = 8,160,513,232.16
  5. Step 5: Solve for x
    x = 8,160,513,232.16/79,356.56
  6. Step 6: Final answer
    x = 102,833.51

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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.