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Finding the Fourth Proportional to 69,357.39, 95,713.53 and 39,143.99

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Solution

The fourth proportional to 69,357.39, 95,713.53 and 39,143.99 is: 54,018.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,357.39 : 95,713.53 = 39,143.99 : x
  2. Step 2: Convert to fraction form
    69,357.39/95,713.53 = 39,143.99/x
  3. Step 3: Cross multiply
    69,357.39x = 95,713.53 × 39,143.99
  4. Step 4: Simplify right side
    69,357.39x = 3,746,608,835.83
  5. Step 5: Solve for x
    x = 3,746,608,835.83/69,357.39
  6. Step 6: Final answer
    x = 54,018.88

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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.