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Finding the Fourth Proportional to 61,057.86, 91,590.26 and 18,943.94

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Solution

The fourth proportional to 61,057.86, 91,590.26 and 18,943.94 is: 28,416.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,057.86 : 91,590.26 = 18,943.94 : x
  2. Step 2: Convert to fraction form
    61,057.86/91,590.26 = 18,943.94/x
  3. Step 3: Cross multiply
    61,057.86x = 91,590.26 × 18,943.94
  4. Step 4: Simplify right side
    61,057.86x = 1,735,079,837.35
  5. Step 5: Solve for x
    x = 1,735,079,837.35/61,057.86
  6. Step 6: Final answer
    x = 28,416.98

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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.