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Finding the Fourth Proportional to 66,478.51, 91,740.77 and 36,264.30

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Solution

The fourth proportional to 66,478.51, 91,740.77 and 36,264.30 is: 50,044.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,478.51 : 91,740.77 = 36,264.30 : x
  2. Step 2: Convert to fraction form
    66,478.51/91,740.77 = 36,264.30/x
  3. Step 3: Cross multiply
    66,478.51x = 91,740.77 × 36,264.30
  4. Step 4: Simplify right side
    66,478.51x = 3,326,914,805.51
  5. Step 5: Solve for x
    x = 3,326,914,805.51/66,478.51
  6. Step 6: Final answer
    x = 50,044.97

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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.