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Finding the Fourth Proportional to 61,615.32, 85,022.56 and 45,491.08

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Solution

The fourth proportional to 61,615.32, 85,022.56 and 45,491.08 is: 62,772.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,615.32 : 85,022.56 = 45,491.08 : x
  2. Step 2: Convert to fraction form
    61,615.32/85,022.56 = 45,491.08/x
  3. Step 3: Cross multiply
    61,615.32x = 85,022.56 × 45,491.08
  4. Step 4: Simplify right side
    61,615.32x = 3,867,768,078.76
  5. Step 5: Solve for x
    x = 3,867,768,078.76/61,615.32
  6. Step 6: Final answer
    x = 62,772.83

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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.