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Finding the Fourth Proportional to 66,345.66, 91,553.31 and 37,657.71

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Solution

The fourth proportional to 66,345.66, 91,553.31 and 37,657.71 is: 51,965.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,345.66 : 91,553.31 = 37,657.71 : x
  2. Step 2: Convert to fraction form
    66,345.66/91,553.31 = 37,657.71/x
  3. Step 3: Cross multiply
    66,345.66x = 91,553.31 × 37,657.71
  4. Step 4: Simplify right side
    66,345.66x = 3,447,687,997.52
  5. Step 5: Solve for x
    x = 3,447,687,997.52/66,345.66
  6. Step 6: Final answer
    x = 51,965.54

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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.