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Finding the Fourth Proportional to 79,787.76, 119,193.42 and 57,410.16

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Solution

The fourth proportional to 79,787.76, 119,193.42 and 57,410.16 is: 85,763.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,787.76 : 119,193.42 = 57,410.16 : x
  2. Step 2: Convert to fraction form
    79,787.76/119,193.42 = 57,410.16/x
  3. Step 3: Cross multiply
    79,787.76x = 119,193.42 × 57,410.16
  4. Step 4: Simplify right side
    79,787.76x = 6,842,913,313.15
  5. Step 5: Solve for x
    x = 6,842,913,313.15/79,787.76
  6. Step 6: Final answer
    x = 85,763.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.