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Finding the Fourth Proportional to 81,794.89, 112,875.32 and 45,495.55

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Solution

The fourth proportional to 81,794.89, 112,875.32 and 45,495.55 is: 62,782.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,794.89 : 112,875.32 = 45,495.55 : x
  2. Step 2: Convert to fraction form
    81,794.89/112,875.32 = 45,495.55/x
  3. Step 3: Cross multiply
    81,794.89x = 112,875.32 × 45,495.55
  4. Step 4: Simplify right side
    81,794.89x = 5,135,324,764.83
  5. Step 5: Solve for x
    x = 5,135,324,764.83/81,794.89
  6. Step 6: Final answer
    x = 62,782.95

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1.5x scale

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.