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Finding the Fourth Proportional to 61,821.76, 85,318.61 and 34,600.56

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Solution

The fourth proportional to 61,821.76, 85,318.61 and 34,600.56 is: 47,751.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,821.76 : 85,318.61 = 34,600.56 : x
  2. Step 2: Convert to fraction form
    61,821.76/85,318.61 = 34,600.56/x
  3. Step 3: Cross multiply
    61,821.76x = 85,318.61 × 34,600.56
  4. Step 4: Simplify right side
    61,821.76x = 2,952,071,831.36
  5. Step 5: Solve for x
    x = 2,952,071,831.36/61,821.76
  6. Step 6: Final answer
    x = 47,751.34

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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.