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Finding the Fourth Proportional to 77,379.59, 106,088.41 and 75,979.91

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Solution

The fourth proportional to 77,379.59, 106,088.41 and 75,979.91 is: 104,169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,379.59 : 106,088.41 = 75,979.91 : x
  2. Step 2: Convert to fraction form
    77,379.59/106,088.41 = 75,979.91/x
  3. Step 3: Cross multiply
    77,379.59x = 106,088.41 × 75,979.91
  4. Step 4: Simplify right side
    77,379.59x = 8,060,587,843.84
  5. Step 5: Solve for x
    x = 8,060,587,843.84/77,379.59
  6. Step 6: Final answer
    x = 104,169.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.