Home / 101,742.52-140,400.78-56,422.36

Finding the Fourth Proportional to 101,742.52, 140,400.78 and 56,422.36

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Solution

The fourth proportional to 101,742.52, 140,400.78 and 56,422.36 is: 77,860.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,742.52 : 140,400.78 = 56,422.36 : x
  2. Step 2: Convert to fraction form
    101,742.52/140,400.78 = 56,422.36/x
  3. Step 3: Cross multiply
    101,742.52x = 140,400.78 × 56,422.36
  4. Step 4: Simplify right side
    101,742.52x = 7,921,743,353.44
  5. Step 5: Solve for x
    x = 7,921,743,353.44/101,742.52
  6. Step 6: Final answer
    x = 77,860.70

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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.