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Finding the Fourth Proportional to 100,428.66, 150,638.43 and 44,253.74

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Solution

The fourth proportional to 100,428.66, 150,638.43 and 44,253.74 is: 66,378.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,428.66 : 150,638.43 = 44,253.74 : x
  2. Step 2: Convert to fraction form
    100,428.66/150,638.43 = 44,253.74/x
  3. Step 3: Cross multiply
    100,428.66x = 150,638.43 × 44,253.74
  4. Step 4: Simplify right side
    100,428.66x = 6,666,314,457.78
  5. Step 5: Solve for x
    x = 6,666,314,457.78/100,428.66
  6. Step 6: Final answer
    x = 66,378.61

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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.