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Finding the Fourth Proportional to 80,001.08, 110,611.80 and 78,738.04

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Solution

The fourth proportional to 80,001.08, 110,611.80 and 78,738.04 is: 108,865.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,001.08 : 110,611.80 = 78,738.04 : x
  2. Step 2: Convert to fraction form
    80,001.08/110,611.80 = 78,738.04/x
  3. Step 3: Cross multiply
    80,001.08x = 110,611.80 × 78,738.04
  4. Step 4: Simplify right side
    80,001.08x = 8,709,356,332.87
  5. Step 5: Solve for x
    x = 8,709,356,332.87/80,001.08
  6. Step 6: Final answer
    x = 108,865.48

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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.