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Finding the Fourth Proportional to 109,055.70, 150,435.40 and 63,724.05

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Solution

The fourth proportional to 109,055.70, 150,435.40 and 63,724.05 is: 87,903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,055.70 : 150,435.40 = 63,724.05 : x
  2. Step 2: Convert to fraction form
    109,055.70/150,435.40 = 63,724.05/x
  3. Step 3: Cross multiply
    109,055.70x = 150,435.40 × 63,724.05
  4. Step 4: Simplify right side
    109,055.70x = 9,586,353,327.46
  5. Step 5: Solve for x
    x = 9,586,353,327.46/109,055.70
  6. Step 6: Final answer
    x = 87,903.27

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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.