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Finding the Fourth Proportional to 66,019.52, 91,015.80 and 63,951.68

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Solution

The fourth proportional to 66,019.52, 91,015.80 and 63,951.68 is: 88,165.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,019.52 : 91,015.80 = 63,951.68 : x
  2. Step 2: Convert to fraction form
    66,019.52/91,015.80 = 63,951.68/x
  3. Step 3: Cross multiply
    66,019.52x = 91,015.80 × 63,951.68
  4. Step 4: Simplify right side
    66,019.52x = 5,820,613,316.54
  5. Step 5: Solve for x
    x = 5,820,613,316.54/66,019.52
  6. Step 6: Final answer
    x = 88,165.04

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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.