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Finding the Fourth Proportional to 68,812.40, 102,454.48 and 68,423.60

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Solution

The fourth proportional to 68,812.40, 102,454.48 and 68,423.60 is: 101,875.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,812.40 : 102,454.48 = 68,423.60 : x
  2. Step 2: Convert to fraction form
    68,812.40/102,454.48 = 68,423.60/x
  3. Step 3: Cross multiply
    68,812.40x = 102,454.48 × 68,423.60
  4. Step 4: Simplify right side
    68,812.40x = 7,010,304,357.73
  5. Step 5: Solve for x
    x = 7,010,304,357.73/68,812.40
  6. Step 6: Final answer
    x = 101,875.60

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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.