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Finding the Fourth Proportional to 101,010.80, 139,394.31 and 55,688.61

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Solution

The fourth proportional to 101,010.80, 139,394.31 and 55,688.61 is: 76,849.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,010.80 : 139,394.31 = 55,688.61 : x
  2. Step 2: Convert to fraction form
    101,010.80/139,394.31 = 55,688.61/x
  3. Step 3: Cross multiply
    101,010.80x = 139,394.31 × 55,688.61
  4. Step 4: Simplify right side
    101,010.80x = 7,762,675,365.81
  5. Step 5: Solve for x
    x = 7,762,675,365.81/101,010.80
  6. Step 6: Final answer
    x = 76,849.96

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.