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Finding the Fourth Proportional to 105,353.72, 157,956.74 and 38,785.20

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Solution

The fourth proportional to 105,353.72, 157,956.74 and 38,785.20 is: 58,150.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,353.72 : 157,956.74 = 38,785.20 : x
  2. Step 2: Convert to fraction form
    105,353.72/157,956.74 = 38,785.20/x
  3. Step 3: Cross multiply
    105,353.72x = 157,956.74 × 38,785.20
  4. Step 4: Simplify right side
    105,353.72x = 6,126,383,752.25
  5. Step 5: Solve for x
    x = 6,126,383,752.25/105,353.72
  6. Step 6: Final answer
    x = 58,150.62

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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.