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Finding the Fourth Proportional to 66,338.92, 91,567.02 and 53,003.08

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Solution

The fourth proportional to 66,338.92, 91,567.02 and 53,003.08 is: 73,159.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,338.92 : 91,567.02 = 53,003.08 : x
  2. Step 2: Convert to fraction form
    66,338.92/91,567.02 = 53,003.08/x
  3. Step 3: Cross multiply
    66,338.92x = 91,567.02 × 53,003.08
  4. Step 4: Simplify right side
    66,338.92x = 4,853,334,086.42
  5. Step 5: Solve for x
    x = 4,853,334,086.42/66,338.92
  6. Step 6: Final answer
    x = 73,159.68

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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.