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Finding the Fourth Proportional to 66,009.28, 91,073.28 and 37,713.28

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Solution

The fourth proportional to 66,009.28, 91,073.28 and 37,713.28 is: 52,033.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,009.28 : 91,073.28 = 37,713.28 : x
  2. Step 2: Convert to fraction form
    66,009.28/91,073.28 = 37,713.28/x
  3. Step 3: Cross multiply
    66,009.28x = 91,073.28 × 37,713.28
  4. Step 4: Simplify right side
    66,009.28x = 3,434,672,109.16
  5. Step 5: Solve for x
    x = 3,434,672,109.16/66,009.28
  6. Step 6: Final answer
    x = 52,033.17

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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.