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Finding the Fourth Proportional to 77,009.91, 106,323.66 and 68,929.56

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Solution

The fourth proportional to 77,009.91, 106,323.66 and 68,929.56 is: 95,167.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,009.91 : 106,323.66 = 68,929.56 : x
  2. Step 2: Convert to fraction form
    77,009.91/106,323.66 = 68,929.56/x
  3. Step 3: Cross multiply
    77,009.91x = 106,323.66 × 68,929.56
  4. Step 4: Simplify right side
    77,009.91x = 7,328,843,101.39
  5. Step 5: Solve for x
    x = 7,328,843,101.39/77,009.91
  6. Step 6: Final answer
    x = 95,167.53

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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.