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Finding the Fourth Proportional to 40,464.78, 60,696.45 and 15,840.78

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Solution

The fourth proportional to 40,464.78, 60,696.45 and 15,840.78 is: 23,760.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,464.78 : 60,696.45 = 15,840.78 : x
  2. Step 2: Convert to fraction form
    40,464.78/60,696.45 = 15,840.78/x
  3. Step 3: Cross multiply
    40,464.78x = 60,696.45 × 15,840.78
  4. Step 4: Simplify right side
    40,464.78x = 961,479,111.23
  5. Step 5: Solve for x
    x = 961,479,111.23/40,464.78
  6. Step 6: Final answer
    x = 23,760.89

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1.5x scale

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.