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Finding the Fourth Proportional to 66,550.40, 91,854.96 and 38,272.40

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Solution

The fourth proportional to 66,550.40, 91,854.96 and 38,272.40 is: 52,824.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,550.40 : 91,854.96 = 38,272.40 : x
  2. Step 2: Convert to fraction form
    66,550.40/91,854.96 = 38,272.40/x
  3. Step 3: Cross multiply
    66,550.40x = 91,854.96 × 38,272.40
  4. Step 4: Simplify right side
    66,550.40x = 3,515,509,771.10
  5. Step 5: Solve for x
    x = 3,515,509,771.10/66,550.40
  6. Step 6: Final answer
    x = 52,824.77

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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.