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Finding the Fourth Proportional to 45,618.48, 68,778.64 and 44,802

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Solution

The fourth proportional to 45,618.48, 68,778.64 and 44,802 is: 67,547.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,618.48 : 68,778.64 = 44,802 : x
  2. Step 2: Convert to fraction form
    45,618.48/68,778.64 = 44,802/x
  3. Step 3: Cross multiply
    45,618.48x = 68,778.64 × 44,802
  4. Step 4: Simplify right side
    45,618.48x = 3,081,420,629.28
  5. Step 5: Solve for x
    x = 3,081,420,629.28/45,618.48
  6. Step 6: Final answer
    x = 67,547.64

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.