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Finding the Fourth Proportional to 66,133.48, 91,264.87 and 35,919.40

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Solution

The fourth proportional to 66,133.48, 91,264.87 and 35,919.40 is: 49,569.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,133.48 : 91,264.87 = 35,919.40 : x
  2. Step 2: Convert to fraction form
    66,133.48/91,264.87 = 35,919.40/x
  3. Step 3: Cross multiply
    66,133.48x = 91,264.87 × 35,919.40
  4. Step 4: Simplify right side
    66,133.48x = 3,278,179,371.48
  5. Step 5: Solve for x
    x = 3,278,179,371.48/66,133.48
  6. Step 6: Final answer
    x = 49,569.13

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1.5x scale

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.