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Finding the Fourth Proportional to 80,969.36, 111,737.88 and 45,158.45

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Solution

The fourth proportional to 80,969.36, 111,737.88 and 45,158.45 is: 62,318.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,969.36 : 111,737.88 = 45,158.45 : x
  2. Step 2: Convert to fraction form
    80,969.36/111,737.88 = 45,158.45/x
  3. Step 3: Cross multiply
    80,969.36x = 111,737.88 × 45,158.45
  4. Step 4: Simplify right side
    80,969.36x = 5,045,908,908.40
  5. Step 5: Solve for x
    x = 5,045,908,908.40/80,969.36
  6. Step 6: Final answer
    x = 62,318.75

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1.5x scale

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.