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Finding the Fourth Proportional to 40,881.60, 61,336.80 and 39,441.60

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Solution

The fourth proportional to 40,881.60, 61,336.80 and 39,441.60 is: 59,176.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,881.60 : 61,336.80 = 39,441.60 : x
  2. Step 2: Convert to fraction form
    40,881.60/61,336.80 = 39,441.60/x
  3. Step 3: Cross multiply
    40,881.60x = 61,336.80 × 39,441.60
  4. Step 4: Simplify right side
    40,881.60x = 2,419,221,530.88
  5. Step 5: Solve for x
    x = 2,419,221,530.88/40,881.60
  6. Step 6: Final answer
    x = 59,176.29

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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.