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Finding the Fourth Proportional to 66,066.71, 91,247.81 and 43,506.59

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Solution

The fourth proportional to 66,066.71, 91,247.81 and 43,506.59 is: 60,088.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,066.71 : 91,247.81 = 43,506.59 : x
  2. Step 2: Convert to fraction form
    66,066.71/91,247.81 = 43,506.59/x
  3. Step 3: Cross multiply
    66,066.71x = 91,247.81 × 43,506.59
  4. Step 4: Simplify right side
    66,066.71x = 3,969,880,840.53
  5. Step 5: Solve for x
    x = 3,969,880,840.53/66,066.71
  6. Step 6: Final answer
    x = 60,088.97

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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.