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Finding the Fourth Proportional to 61,129.83, 91,694.75 and 40,348.47

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Solution

The fourth proportional to 61,129.83, 91,694.75 and 40,348.47 is: 60,522.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,129.83 : 91,694.75 = 40,348.47 : x
  2. Step 2: Convert to fraction form
    61,129.83/91,694.75 = 40,348.47/x
  3. Step 3: Cross multiply
    61,129.83x = 91,694.75 × 40,348.47
  4. Step 4: Simplify right side
    61,129.83x = 3,699,742,667.79
  5. Step 5: Solve for x
    x = 3,699,742,667.79/61,129.83
  6. Step 6: Final answer
    x = 60,522.71

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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.