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Finding the Fourth Proportional to 50,491.40, 75,737.10 and 40,649.90

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Solution

The fourth proportional to 50,491.40, 75,737.10 and 40,649.90 is: 60,974.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,491.40 : 75,737.10 = 40,649.90 : x
  2. Step 2: Convert to fraction form
    50,491.40/75,737.10 = 40,649.90/x
  3. Step 3: Cross multiply
    50,491.40x = 75,737.10 × 40,649.90
  4. Step 4: Simplify right side
    50,491.40x = 3,078,705,541.29
  5. Step 5: Solve for x
    x = 3,078,705,541.29/50,491.40
  6. Step 6: Final answer
    x = 60,974.85

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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.