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Finding the Fourth Proportional to 101,010.94, 139,396.05 and 55,690.53

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Solution

The fourth proportional to 101,010.94, 139,396.05 and 55,690.53 is: 76,853.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,010.94 : 139,396.05 = 55,690.53 : x
  2. Step 2: Convert to fraction form
    101,010.94/139,396.05 = 55,690.53/x
  3. Step 3: Cross multiply
    101,010.94x = 139,396.05 × 55,690.53
  4. Step 4: Simplify right side
    101,010.94x = 7,763,039,904.41
  5. Step 5: Solve for x
    x = 7,763,039,904.41/101,010.94
  6. Step 6: Final answer
    x = 76,853.46

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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.