Home / 84,303.56-126,441.18-28,138.52

Finding the Fourth Proportional to 84,303.56, 126,441.18 and 28,138.52

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Solution

The fourth proportional to 84,303.56, 126,441.18 and 28,138.52 is: 42,203.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,303.56 : 126,441.18 = 28,138.52 : x
  2. Step 2: Convert to fraction form
    84,303.56/126,441.18 = 28,138.52/x
  3. Step 3: Cross multiply
    84,303.56x = 126,441.18 × 28,138.52
  4. Step 4: Simplify right side
    84,303.56x = 3,557,867,672.25
  5. Step 5: Solve for x
    x = 3,557,867,672.25/84,303.56
  6. Step 6: Final answer
    x = 42,203.05

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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.