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Finding the Fourth Proportional to 66,662.16, 99,943.74 and 40,360.56

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Solution

The fourth proportional to 66,662.16, 99,943.74 and 40,360.56 is: 60,510.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,662.16 : 99,943.74 = 40,360.56 : x
  2. Step 2: Convert to fraction form
    66,662.16/99,943.74 = 40,360.56/x
  3. Step 3: Cross multiply
    66,662.16x = 99,943.74 × 40,360.56
  4. Step 4: Simplify right side
    66,662.16x = 4,033,785,314.89
  5. Step 5: Solve for x
    x = 4,033,785,314.89/66,662.16
  6. Step 6: Final answer
    x = 60,510.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.