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Finding the Fourth Proportional to 80,520.30, 112,961.70 and 80,520.30

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Solution

The fourth proportional to 80,520.30, 112,961.70 and 80,520.30 is: 112,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,520.30 : 112,961.70 = 80,520.30 : x
  2. Step 2: Convert to fraction form
    80,520.30/112,961.70 = 80,520.30/x
  3. Step 3: Cross multiply
    80,520.30x = 112,961.70 × 80,520.30
  4. Step 4: Simplify right side
    80,520.30x = 9,095,709,972.51
  5. Step 5: Solve for x
    x = 9,095,709,972.51/80,520.30
  6. Step 6: Final answer
    x = 112,961.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.