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Finding the Fourth Proportional to 41,368.60, 61,979.70 and 39,998.20

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Solution

The fourth proportional to 41,368.60, 61,979.70 and 39,998.20 is: 59,926.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,368.60 : 61,979.70 = 39,998.20 : x
  2. Step 2: Convert to fraction form
    41,368.60/61,979.70 = 39,998.20/x
  3. Step 3: Cross multiply
    41,368.60x = 61,979.70 × 39,998.20
  4. Step 4: Simplify right side
    41,368.60x = 2,479,076,436.54
  5. Step 5: Solve for x
    x = 2,479,076,436.54/41,368.60
  6. Step 6: Final answer
    x = 59,926.52

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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.