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Finding the Fourth Proportional to 102,431.52, 153,514.08 and 52,469.28

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Solution

The fourth proportional to 102,431.52, 153,514.08 and 52,469.28 is: 78,635.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,431.52 : 153,514.08 = 52,469.28 : x
  2. Step 2: Convert to fraction form
    102,431.52/153,514.08 = 52,469.28/x
  3. Step 3: Cross multiply
    102,431.52x = 153,514.08 × 52,469.28
  4. Step 4: Simplify right side
    102,431.52x = 8,054,773,247.46
  5. Step 5: Solve for x
    x = 8,054,773,247.46/102,431.52
  6. Step 6: Final answer
    x = 78,635.69

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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.