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Finding the Fourth Proportional to 83,969.28, 125,339.58 and 74,005.11

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Solution

The fourth proportional to 83,969.28, 125,339.58 and 74,005.11 is: 110,466.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,969.28 : 125,339.58 = 74,005.11 : x
  2. Step 2: Convert to fraction form
    83,969.28/125,339.58 = 74,005.11/x
  3. Step 3: Cross multiply
    83,969.28x = 125,339.58 × 74,005.11
  4. Step 4: Simplify right side
    83,969.28x = 9,275,769,405.25
  5. Step 5: Solve for x
    x = 9,275,769,405.25/83,969.28
  6. Step 6: Final answer
    x = 110,466.23

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1.5x scale

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.