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Finding the Fourth Proportional to 28,062.78, 42,101.11 and 8,341.26

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Solution

The fourth proportional to 28,062.78, 42,101.11 and 8,341.26 is: 12,513.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,062.78 : 42,101.11 = 8,341.26 : x
  2. Step 2: Convert to fraction form
    28,062.78/42,101.11 = 8,341.26/x
  3. Step 3: Cross multiply
    28,062.78x = 42,101.11 × 8,341.26
  4. Step 4: Simplify right side
    28,062.78x = 351,176,094.29
  5. Step 5: Solve for x
    x = 351,176,094.29/28,062.78
  6. Step 6: Final answer
    x = 12,513.95

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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.