Home / 69,108.11-95,376.93-38,900.78

Finding the Fourth Proportional to 69,108.11, 95,376.93 and 38,900.78

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Solution

The fourth proportional to 69,108.11, 95,376.93 and 38,900.78 is: 53,687.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,108.11 : 95,376.93 = 38,900.78 : x
  2. Step 2: Convert to fraction form
    69,108.11/95,376.93 = 38,900.78/x
  3. Step 3: Cross multiply
    69,108.11x = 95,376.93 × 38,900.78
  4. Step 4: Simplify right side
    69,108.11x = 3,710,236,971.01
  5. Step 5: Solve for x
    x = 3,710,236,971.01/69,108.11
  6. Step 6: Final answer
    x = 53,687.43

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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.