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Finding the Fourth Proportional to 101,104.84, 139,526.10 and 55,784.80

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Solution

The fourth proportional to 101,104.84, 139,526.10 and 55,784.80 is: 76,983.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,104.84 : 139,526.10 = 55,784.80 : x
  2. Step 2: Convert to fraction form
    101,104.84/139,526.10 = 55,784.80/x
  3. Step 3: Cross multiply
    101,104.84x = 139,526.10 × 55,784.80
  4. Step 4: Simplify right side
    101,104.84x = 7,783,435,583.28
  5. Step 5: Solve for x
    x = 7,783,435,583.28/101,104.84
  6. Step 6: Final answer
    x = 76,983.81

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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.