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Finding the Fourth Proportional to 66,153.69, 91,293.12 and 35,939.61

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Solution

The fourth proportional to 66,153.69, 91,293.12 and 35,939.61 is: 49,597.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,153.69 : 91,293.12 = 35,939.61 : x
  2. Step 2: Convert to fraction form
    66,153.69/91,293.12 = 35,939.61/x
  3. Step 3: Cross multiply
    66,153.69x = 91,293.12 × 35,939.61
  4. Step 4: Simplify right side
    66,153.69x = 3,281,039,128.48
  5. Step 5: Solve for x
    x = 3,281,039,128.48/66,153.69
  6. Step 6: Final answer
    x = 49,597.22

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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.