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Finding the Fourth Proportional to 52,007.73, 77,964.07 and 18,720.17

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Solution

The fourth proportional to 52,007.73, 77,964.07 and 18,720.17 is: 28,063.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,007.73 : 77,964.07 = 18,720.17 : x
  2. Step 2: Convert to fraction form
    52,007.73/77,964.07 = 18,720.17/x
  3. Step 3: Cross multiply
    52,007.73x = 77,964.07 × 18,720.17
  4. Step 4: Simplify right side
    52,007.73x = 1,459,500,644.29
  5. Step 5: Solve for x
    x = 1,459,500,644.29/52,007.73
  6. Step 6: Final answer
    x = 28,063.15

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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.