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Finding the Fourth Proportional to 101,313.86, 139,809.04 and 58,869.05

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Solution

The fourth proportional to 101,313.86, 139,809.04 and 58,869.05 is: 81,236.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,313.86 : 139,809.04 = 58,869.05 : x
  2. Step 2: Convert to fraction form
    101,313.86/139,809.04 = 58,869.05/x
  3. Step 3: Cross multiply
    101,313.86x = 139,809.04 × 58,869.05
  4. Step 4: Simplify right side
    101,313.86x = 8,230,424,519.99
  5. Step 5: Solve for x
    x = 8,230,424,519.99/101,313.86
  6. Step 6: Final answer
    x = 81,236.91

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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.