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Finding the Fourth Proportional to 58,342.78, 87,514.17 and 20,905.14

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Solution

The fourth proportional to 58,342.78, 87,514.17 and 20,905.14 is: 31,357.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,342.78 : 87,514.17 = 20,905.14 : x
  2. Step 2: Convert to fraction form
    58,342.78/87,514.17 = 20,905.14/x
  3. Step 3: Cross multiply
    58,342.78x = 87,514.17 × 20,905.14
  4. Step 4: Simplify right side
    58,342.78x = 1,829,495,850.94
  5. Step 5: Solve for x
    x = 1,829,495,850.94/58,342.78
  6. Step 6: Final answer
    x = 31,357.71

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1.5x scale

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.