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Finding the Fourth Proportional to 66,510.81, 91,782.06 and 36,295.38

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Solution

The fourth proportional to 66,510.81, 91,782.06 and 36,295.38 is: 50,086.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,510.81 : 91,782.06 = 36,295.38 : x
  2. Step 2: Convert to fraction form
    66,510.81/91,782.06 = 36,295.38/x
  3. Step 3: Cross multiply
    66,510.81x = 91,782.06 × 36,295.38
  4. Step 4: Simplify right side
    66,510.81x = 3,331,264,744.88
  5. Step 5: Solve for x
    x = 3,331,264,744.88/66,510.81
  6. Step 6: Final answer
    x = 50,086.06

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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.