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Finding the Fourth Proportional to 72,492.82, 100,116.13 and 49,890.17

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Solution

The fourth proportional to 72,492.82, 100,116.13 and 49,890.17 is: 68,900.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,492.82 : 100,116.13 = 49,890.17 : x
  2. Step 2: Convert to fraction form
    72,492.82/100,116.13 = 49,890.17/x
  3. Step 3: Cross multiply
    72,492.82x = 100,116.13 × 49,890.17
  4. Step 4: Simplify right side
    72,492.82x = 4,994,810,745.44
  5. Step 5: Solve for x
    x = 4,994,810,745.44/72,492.82
  6. Step 6: Final answer
    x = 68,900.76

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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.