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Finding the Fourth Proportional to 70,717.91, 106,077.47 and 18,127.85

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Solution

The fourth proportional to 70,717.91, 106,077.47 and 18,127.85 is: 27,191.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,717.91 : 106,077.47 = 18,127.85 : x
  2. Step 2: Convert to fraction form
    70,717.91/106,077.47 = 18,127.85/x
  3. Step 3: Cross multiply
    70,717.91x = 106,077.47 × 18,127.85
  4. Step 4: Simplify right side
    70,717.91x = 1,922,955,843.51
  5. Step 5: Solve for x
    x = 1,922,955,843.51/70,717.91
  6. Step 6: Final answer
    x = 27,191.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.