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Finding the Fourth Proportional to 40,687.70, 61,041.30 and 16,982.06

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Solution

The fourth proportional to 40,687.70, 61,041.30 and 16,982.06 is: 25,477.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,687.70 : 61,041.30 = 16,982.06 : x
  2. Step 2: Convert to fraction form
    40,687.70/61,041.30 = 16,982.06/x
  3. Step 3: Cross multiply
    40,687.70x = 61,041.30 × 16,982.06
  4. Step 4: Simplify right side
    40,687.70x = 1,036,607,019.08
  5. Step 5: Solve for x
    x = 1,036,607,019.08/40,687.70
  6. Step 6: Final answer
    x = 25,477.16

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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.