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Finding the Fourth Proportional to 66,086.38, 99,129.71 and 46,452.79

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Solution

The fourth proportional to 66,086.38, 99,129.71 and 46,452.79 is: 69,679.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,086.38 : 99,129.71 = 46,452.79 : x
  2. Step 2: Convert to fraction form
    66,086.38/99,129.71 = 46,452.79/x
  3. Step 3: Cross multiply
    66,086.38x = 99,129.71 × 46,452.79
  4. Step 4: Simplify right side
    66,086.38x = 4,604,851,601.39
  5. Step 5: Solve for x
    x = 4,604,851,601.39/66,086.38
  6. Step 6: Final answer
    x = 69,679.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.