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Finding the Fourth Proportional to 72,251.40, 108,506.70 and 69,918.60

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Solution

The fourth proportional to 72,251.40, 108,506.70 and 69,918.60 is: 105,003.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,251.40 : 108,506.70 = 69,918.60 : x
  2. Step 2: Convert to fraction form
    72,251.40/108,506.70 = 69,918.60/x
  3. Step 3: Cross multiply
    72,251.40x = 108,506.70 × 69,918.60
  4. Step 4: Simplify right side
    72,251.40x = 7,586,636,554.62
  5. Step 5: Solve for x
    x = 7,586,636,554.62/72,251.40
  6. Step 6: Final answer
    x = 105,003.32

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1.5x scale

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.