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Finding the Fourth Proportional to 40,885.78, 56,419.79 and 22,980.54

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Solution

The fourth proportional to 40,885.78, 56,419.79 and 22,980.54 is: 31,711.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,885.78 : 56,419.79 = 22,980.54 : x
  2. Step 2: Convert to fraction form
    40,885.78/56,419.79 = 22,980.54/x
  3. Step 3: Cross multiply
    40,885.78x = 56,419.79 × 22,980.54
  4. Step 4: Simplify right side
    40,885.78x = 1,296,557,240.89
  5. Step 5: Solve for x
    x = 1,296,557,240.89/40,885.78
  6. Step 6: Final answer
    x = 31,711.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.