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Finding the Fourth Proportional to 65,378.82, 90,113.13 and 50,060.10

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Solution

The fourth proportional to 65,378.82, 90,113.13 and 50,060.10 is: 68,998.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,378.82 : 90,113.13 = 50,060.10 : x
  2. Step 2: Convert to fraction form
    65,378.82/90,113.13 = 50,060.10/x
  3. Step 3: Cross multiply
    65,378.82x = 90,113.13 × 50,060.10
  4. Step 4: Simplify right side
    65,378.82x = 4,511,072,299.11
  5. Step 5: Solve for x
    x = 4,511,072,299.11/65,378.82
  6. Step 6: Final answer
    x = 68,998.99

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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.