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Finding the Fourth Proportional to 42,244.07, 63,358.03 and 12,661.90

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Solution

The fourth proportional to 42,244.07, 63,358.03 and 12,661.90 is: 18,990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,244.07 : 63,358.03 = 12,661.90 : x
  2. Step 2: Convert to fraction form
    42,244.07/63,358.03 = 12,661.90/x
  3. Step 3: Cross multiply
    42,244.07x = 63,358.03 × 12,661.90
  4. Step 4: Simplify right side
    42,244.07x = 802,233,040.06
  5. Step 5: Solve for x
    x = 802,233,040.06/42,244.07
  6. Step 6: Final answer
    x = 18,990.43

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.