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Finding the Fourth Proportional to 66,132.48, 91,263.49 and 35,918.40

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Solution

The fourth proportional to 66,132.48, 91,263.49 and 35,918.40 is: 49,567.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,132.48 : 91,263.49 = 35,918.40 : x
  2. Step 2: Convert to fraction form
    66,132.48/91,263.49 = 35,918.40/x
  3. Step 3: Cross multiply
    66,132.48x = 91,263.49 × 35,918.40
  4. Step 4: Simplify right side
    66,132.48x = 3,278,038,107.18
  5. Step 5: Solve for x
    x = 3,278,038,107.18/66,132.48
  6. Step 6: Final answer
    x = 49,567.74

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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.