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Finding the Fourth Proportional to 62,980.86, 86,917.51 and 34,686.54

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Solution

The fourth proportional to 62,980.86, 86,917.51 and 34,686.54 is: 47,869.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,980.86 : 86,917.51 = 34,686.54 : x
  2. Step 2: Convert to fraction form
    62,980.86/86,917.51 = 34,686.54/x
  3. Step 3: Cross multiply
    62,980.86x = 86,917.51 × 34,686.54
  4. Step 4: Simplify right side
    62,980.86x = 3,014,867,252.73
  5. Step 5: Solve for x
    x = 3,014,867,252.73/62,980.86
  6. Step 6: Final answer
    x = 47,869.58

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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.