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Finding the Fourth Proportional to 62,580, 86,360.40 and 34,286.76

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Solution

The fourth proportional to 62,580, 86,360.40 and 34,286.76 is: 47,315.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,580 : 86,360.40 = 34,286.76 : x
  2. Step 2: Convert to fraction form
    62,580/86,360.40 = 34,286.76/x
  3. Step 3: Cross multiply
    62,580x = 86,360.40 × 34,286.76
  4. Step 4: Simplify right side
    62,580x = 2,961,018,308.30
  5. Step 5: Solve for x
    x = 2,961,018,308.30/62,580
  6. Step 6: Final answer
    x = 47,315.73

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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.