Home / 84,579.44-126,871.22-28,420.36

Finding the Fourth Proportional to 84,579.44, 126,871.22 and 28,420.36

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Solution

The fourth proportional to 84,579.44, 126,871.22 and 28,420.36 is: 42,631.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,579.44 : 126,871.22 = 28,420.36 : x
  2. Step 2: Convert to fraction form
    84,579.44/126,871.22 = 28,420.36/x
  3. Step 3: Cross multiply
    84,579.44x = 126,871.22 × 28,420.36
  4. Step 4: Simplify right side
    84,579.44x = 3,605,725,746.04
  5. Step 5: Solve for x
    x = 3,605,725,746.04/84,579.44
  6. Step 6: Final answer
    x = 42,631.23

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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.