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Finding the Fourth Proportional to 76,372.44, 105,392.68 and 42,837.72

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Solution

The fourth proportional to 76,372.44, 105,392.68 and 42,837.72 is: 59,115.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,372.44 : 105,392.68 = 42,837.72 : x
  2. Step 2: Convert to fraction form
    76,372.44/105,392.68 = 42,837.72/x
  3. Step 3: Cross multiply
    76,372.44x = 105,392.68 × 42,837.72
  4. Step 4: Simplify right side
    76,372.44x = 4,514,782,115.89
  5. Step 5: Solve for x
    x = 4,514,782,115.89/76,372.44
  6. Step 6: Final answer
    x = 59,115.33

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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.