Home / 75,109.45-103,656.06-43,280.41

Finding the Fourth Proportional to 75,109.45, 103,656.06 and 43,280.41

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Solution

The fourth proportional to 75,109.45, 103,656.06 and 43,280.41 is: 59,729.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,109.45 : 103,656.06 = 43,280.41 : x
  2. Step 2: Convert to fraction form
    75,109.45/103,656.06 = 43,280.41/x
  3. Step 3: Cross multiply
    75,109.45x = 103,656.06 × 43,280.41
  4. Step 4: Simplify right side
    75,109.45x = 4,486,276,775.78
  5. Step 5: Solve for x
    x = 4,486,276,775.78/75,109.45
  6. Step 6: Final answer
    x = 59,729.86

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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.