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Finding the Fourth Proportional to 66,313.68, 91,513.80 and 36,506.32

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Solution

The fourth proportional to 66,313.68, 91,513.80 and 36,506.32 is: 50,379.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,313.68 : 91,513.80 = 36,506.32 : x
  2. Step 2: Convert to fraction form
    66,313.68/91,513.80 = 36,506.32/x
  3. Step 3: Cross multiply
    66,313.68x = 91,513.80 × 36,506.32
  4. Step 4: Simplify right side
    66,313.68x = 3,340,832,067.22
  5. Step 5: Solve for x
    x = 3,340,832,067.22/66,313.68
  6. Step 6: Final answer
    x = 50,379.23

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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.