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Finding the Fourth Proportional to 40,685.40, 61,028.10 and 29,539.80

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Solution

The fourth proportional to 40,685.40, 61,028.10 and 29,539.80 is: 44,309.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,685.40 : 61,028.10 = 29,539.80 : x
  2. Step 2: Convert to fraction form
    40,685.40/61,028.10 = 29,539.80/x
  3. Step 3: Cross multiply
    40,685.40x = 61,028.10 × 29,539.80
  4. Step 4: Simplify right side
    40,685.40x = 1,802,757,868.38
  5. Step 5: Solve for x
    x = 1,802,757,868.38/40,685.40
  6. Step 6: Final answer
    x = 44,309.70

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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.