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Finding the Fourth Proportional to 28,479.62, 42,716.19 and 7,701.50

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Solution

The fourth proportional to 28,479.62, 42,716.19 and 7,701.50 is: 11,551.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.62 : 42,716.19 = 7,701.50 : x
  2. Step 2: Convert to fraction form
    28,479.62/42,716.19 = 7,701.50/x
  3. Step 3: Cross multiply
    28,479.62x = 42,716.19 × 7,701.50
  4. Step 4: Simplify right side
    28,479.62x = 328,978,737.29
  5. Step 5: Solve for x
    x = 328,978,737.29/28,479.62
  6. Step 6: Final answer
    x = 11,551.37

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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.