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Finding the Fourth Proportional to 115,785, 159,783.30 and 62,793

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Solution

The fourth proportional to 115,785, 159,783.30 and 62,793 is: 86,654.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,785 : 159,783.30 = 62,793 : x
  2. Step 2: Convert to fraction form
    115,785/159,783.30 = 62,793/x
  3. Step 3: Cross multiply
    115,785x = 159,783.30 × 62,793
  4. Step 4: Simplify right side
    115,785x = 10,033,272,756.90
  5. Step 5: Solve for x
    x = 10,033,272,756.90/115,785
  6. Step 6: Final answer
    x = 86,654.34

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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.