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Finding the Fourth Proportional to 85,307.70, 117,723.80 and 47,067.55

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Solution

The fourth proportional to 85,307.70, 117,723.80 and 47,067.55 is: 64,952.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,307.70 : 117,723.80 = 47,067.55 : x
  2. Step 2: Convert to fraction form
    85,307.70/117,723.80 = 47,067.55/x
  3. Step 3: Cross multiply
    85,307.70x = 117,723.80 × 47,067.55
  4. Step 4: Simplify right side
    85,307.70x = 5,540,970,842.69
  5. Step 5: Solve for x
    x = 5,540,970,842.69/85,307.70
  6. Step 6: Final answer
    x = 64,952.76

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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.