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Finding the Fourth Proportional to 77,489.52, 106,847.47 and 69,933.43

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Solution

The fourth proportional to 77,489.52, 106,847.47 and 69,933.43 is: 96,428.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,489.52 : 106,847.47 = 69,933.43 : x
  2. Step 2: Convert to fraction form
    77,489.52/106,847.47 = 69,933.43/x
  3. Step 3: Cross multiply
    77,489.52x = 106,847.47 × 69,933.43
  4. Step 4: Simplify right side
    77,489.52x = 7,472,210,063.92
  5. Step 5: Solve for x
    x = 7,472,210,063.92/77,489.52
  6. Step 6: Final answer
    x = 96,428.65

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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.