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Finding the Fourth Proportional to 45,715.80, 68,688.90 and 29,083.80

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Solution

The fourth proportional to 45,715.80, 68,688.90 and 29,083.80 is: 43,698.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,715.80 : 68,688.90 = 29,083.80 : x
  2. Step 2: Convert to fraction form
    45,715.80/68,688.90 = 29,083.80/x
  3. Step 3: Cross multiply
    45,715.80x = 68,688.90 × 29,083.80
  4. Step 4: Simplify right side
    45,715.80x = 1,997,734,229.82
  5. Step 5: Solve for x
    x = 1,997,734,229.82/45,715.80
  6. Step 6: Final answer
    x = 43,698.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.