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Finding the Fourth Proportional to 56,223.36, 84,231.36 and 28,488.96

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Solution

The fourth proportional to 56,223.36, 84,231.36 and 28,488.96 is: 42,680.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,223.36 : 84,231.36 = 28,488.96 : x
  2. Step 2: Convert to fraction form
    56,223.36/84,231.36 = 28,488.96/x
  3. Step 3: Cross multiply
    56,223.36x = 84,231.36 × 28,488.96
  4. Step 4: Simplify right side
    56,223.36x = 2,399,663,845.79
  5. Step 5: Solve for x
    x = 2,399,663,845.79/56,223.36
  6. Step 6: Final answer
    x = 42,680.90

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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.