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Finding the Fourth Proportional to 101,302.32, 139,793.45 and 55,979.37

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Solution

The fourth proportional to 101,302.32, 139,793.45 and 55,979.37 is: 77,249.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,302.32 : 139,793.45 = 55,979.37 : x
  2. Step 2: Convert to fraction form
    101,302.32/139,793.45 = 55,979.37/x
  3. Step 3: Cross multiply
    101,302.32x = 139,793.45 × 55,979.37
  4. Step 4: Simplify right side
    101,302.32x = 7,825,548,981.23
  5. Step 5: Solve for x
    x = 7,825,548,981.23/101,302.32
  6. Step 6: Final answer
    x = 77,249.45

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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.