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Finding the Fourth Proportional to 127,390.52, 191,064.22 and 38,622.62

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Solution

The fourth proportional to 127,390.52, 191,064.22 and 38,622.62 is: 57,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,390.52 : 191,064.22 = 38,622.62 : x
  2. Step 2: Convert to fraction form
    127,390.52/191,064.22 = 38,622.62/x
  3. Step 3: Cross multiply
    127,390.52x = 191,064.22 × 38,622.62
  4. Step 4: Simplify right side
    127,390.52x = 7,379,401,145.76
  5. Step 5: Solve for x
    x = 7,379,401,145.76/127,390.52
  6. Step 6: Final answer
    x = 57,927.40

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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.