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Finding the Fourth Proportional to 61,724, 85,155.63 and 45,629.95

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Solution

The fourth proportional to 61,724, 85,155.63 and 45,629.95 is: 62,951.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,724 : 85,155.63 = 45,629.95 : x
  2. Step 2: Convert to fraction form
    61,724/85,155.63 = 45,629.95/x
  3. Step 3: Cross multiply
    61,724x = 85,155.63 × 45,629.95
  4. Step 4: Simplify right side
    61,724x = 3,885,647,139.12
  5. Step 5: Solve for x
    x = 3,885,647,139.12/61,724
  6. Step 6: Final answer
    x = 62,951.97

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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.