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Finding the Fourth Proportional to 80,603.65, 112,961.75 and 80,603.65

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Solution

The fourth proportional to 80,603.65, 112,961.75 and 80,603.65 is: 112,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,603.65 : 112,961.75 = 80,603.65 : x
  2. Step 2: Convert to fraction form
    80,603.65/112,961.75 = 80,603.65/x
  3. Step 3: Cross multiply
    80,603.65x = 112,961.75 × 80,603.65
  4. Step 4: Simplify right side
    80,603.65x = 9,105,129,360.39
  5. Step 5: Solve for x
    x = 9,105,129,360.39/80,603.65
  6. Step 6: Final answer
    x = 112,961.75

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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.