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Finding the Fourth Proportional to 40,698.40, 61,047.60 and 25,972.60

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Solution

The fourth proportional to 40,698.40, 61,047.60 and 25,972.60 is: 38,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,698.40 : 61,047.60 = 25,972.60 : x
  2. Step 2: Convert to fraction form
    40,698.40/61,047.60 = 25,972.60/x
  3. Step 3: Cross multiply
    40,698.40x = 61,047.60 × 25,972.60
  4. Step 4: Simplify right side
    40,698.40x = 1,585,564,895.76
  5. Step 5: Solve for x
    x = 1,585,564,895.76/40,698.40
  6. Step 6: Final answer
    x = 38,958.90

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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.