Home / 101,729.27-140,388.07-56,409.16

Finding the Fourth Proportional to 101,729.27, 140,388.07 and 56,409.16

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Solution

The fourth proportional to 101,729.27, 140,388.07 and 56,409.16 is: 77,845.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,729.27 : 140,388.07 = 56,409.16 : x
  2. Step 2: Convert to fraction form
    101,729.27/140,388.07 = 56,409.16/x
  3. Step 3: Cross multiply
    101,729.27x = 140,388.07 × 56,409.16
  4. Step 4: Simplify right side
    101,729.27x = 7,919,172,979.72
  5. Step 5: Solve for x
    x = 7,919,172,979.72/101,729.27
  6. Step 6: Final answer
    x = 77,845.57

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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.