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Finding the Fourth Proportional to 127,624.72, 191,446.80 and 38,885.80

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Solution

The fourth proportional to 127,624.72, 191,446.80 and 38,885.80 is: 58,331.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,624.72 : 191,446.80 = 38,885.80 : x
  2. Step 2: Convert to fraction form
    127,624.72/191,446.80 = 38,885.80/x
  3. Step 3: Cross multiply
    127,624.72x = 191,446.80 × 38,885.80
  4. Step 4: Simplify right side
    127,624.72x = 7,444,561,975.44
  5. Step 5: Solve for x
    x = 7,444,561,975.44/127,624.72
  6. Step 6: Final answer
    x = 58,331.66

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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.