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Finding the Fourth Proportional to 45,988, 68,924.29 and 19,661.80

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Solution

The fourth proportional to 45,988, 68,924.29 and 19,661.80 is: 29,468.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,988 : 68,924.29 = 19,661.80 : x
  2. Step 2: Convert to fraction form
    45,988/68,924.29 = 19,661.80/x
  3. Step 3: Cross multiply
    45,988x = 68,924.29 × 19,661.80
  4. Step 4: Simplify right side
    45,988x = 1,355,175,605.12
  5. Step 5: Solve for x
    x = 1,355,175,605.12/45,988
  6. Step 6: Final answer
    x = 29,468.03

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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.