Home / 75,530.40-113,223.60-28,132.80

Finding the Fourth Proportional to 75,530.40, 113,223.60 and 28,132.80

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Solution

The fourth proportional to 75,530.40, 113,223.60 and 28,132.80 is: 42,172.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,530.40 : 113,223.60 = 28,132.80 : x
  2. Step 2: Convert to fraction form
    75,530.40/113,223.60 = 28,132.80/x
  3. Step 3: Cross multiply
    75,530.40x = 113,223.60 × 28,132.80
  4. Step 4: Simplify right side
    75,530.40x = 3,185,296,894.08
  5. Step 5: Solve for x
    x = 3,185,296,894.08/75,530.40
  6. Step 6: Final answer
    x = 42,172.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.