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Finding the Fourth Proportional to 56,747.40, 85,121.10 and 15,194.40

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Solution

The fourth proportional to 56,747.40, 85,121.10 and 15,194.40 is: 22,791.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,747.40 : 85,121.10 = 15,194.40 : x
  2. Step 2: Convert to fraction form
    56,747.40/85,121.10 = 15,194.40/x
  3. Step 3: Cross multiply
    56,747.40x = 85,121.10 × 15,194.40
  4. Step 4: Simplify right side
    56,747.40x = 1,293,364,041.84
  5. Step 5: Solve for x
    x = 1,293,364,041.84/56,747.40
  6. Step 6: Final answer
    x = 22,791.60

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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.