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Finding the Fourth Proportional to 69,882.40, 104,780.40 and 40,285.60

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Solution

The fourth proportional to 69,882.40, 104,780.40 and 40,285.60 is: 60,403.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,882.40 : 104,780.40 = 40,285.60 : x
  2. Step 2: Convert to fraction form
    69,882.40/104,780.40 = 40,285.60/x
  3. Step 3: Cross multiply
    69,882.40x = 104,780.40 × 40,285.60
  4. Step 4: Simplify right side
    69,882.40x = 4,221,141,282.24
  5. Step 5: Solve for x
    x = 4,221,141,282.24/69,882.40
  6. Step 6: Final answer
    x = 60,403.50

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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.