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Finding the Fourth Proportional to 48,615.36, 72,895.20 and 28,907.68

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Solution

The fourth proportional to 48,615.36, 72,895.20 and 28,907.68 is: 43,344.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,615.36 : 72,895.20 = 28,907.68 : x
  2. Step 2: Convert to fraction form
    48,615.36/72,895.20 = 28,907.68/x
  3. Step 3: Cross multiply
    48,615.36x = 72,895.20 × 28,907.68
  4. Step 4: Simplify right side
    48,615.36x = 2,107,231,115.14
  5. Step 5: Solve for x
    x = 2,107,231,115.14/48,615.36
  6. Step 6: Final answer
    x = 43,344.97

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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.