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Finding the Fourth Proportional to 66,478.72, 91,740.76 and 36,264.08

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Solution

The fourth proportional to 66,478.72, 91,740.76 and 36,264.08 is: 50,044.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,478.72 : 91,740.76 = 36,264.08 : x
  2. Step 2: Convert to fraction form
    66,478.72/91,740.76 = 36,264.08/x
  3. Step 3: Cross multiply
    66,478.72x = 91,740.76 × 36,264.08
  4. Step 4: Simplify right side
    66,478.72x = 3,326,894,259.90
  5. Step 5: Solve for x
    x = 3,326,894,259.90/66,478.72
  6. Step 6: Final answer
    x = 50,044.50

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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.