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Finding the Fourth Proportional to 79,410.83, 119,282.31 and 66,955.19

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Solution

The fourth proportional to 79,410.83, 119,282.31 and 66,955.19 is: 100,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,410.83 : 119,282.31 = 66,955.19 : x
  2. Step 2: Convert to fraction form
    79,410.83/119,282.31 = 66,955.19/x
  3. Step 3: Cross multiply
    79,410.83x = 119,282.31 × 66,955.19
  4. Step 4: Simplify right side
    79,410.83x = 7,986,569,133.28
  5. Step 5: Solve for x
    x = 7,986,569,133.28/79,410.83
  6. Step 6: Final answer
    x = 100,572.80

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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.