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Finding the Fourth Proportional to 66,464, 91,618.08 and 43,763.84

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Solution

The fourth proportional to 66,464, 91,618.08 and 43,763.84 is: 60,326.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,464 : 91,618.08 = 43,763.84 : x
  2. Step 2: Convert to fraction form
    66,464/91,618.08 = 43,763.84/x
  3. Step 3: Cross multiply
    66,464x = 91,618.08 × 43,763.84
  4. Step 4: Simplify right side
    66,464x = 4,009,558,994.23
  5. Step 5: Solve for x
    x = 4,009,558,994.23/66,464
  6. Step 6: Final answer
    x = 60,326.78

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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.