Home / 53,215.20-79,725.60-43,300.80

Finding the Fourth Proportional to 53,215.20, 79,725.60 and 43,300.80

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Solution

The fourth proportional to 53,215.20, 79,725.60 and 43,300.80 is: 64,872.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,215.20 : 79,725.60 = 43,300.80 : x
  2. Step 2: Convert to fraction form
    53,215.20/79,725.60 = 43,300.80/x
  3. Step 3: Cross multiply
    53,215.20x = 79,725.60 × 43,300.80
  4. Step 4: Simplify right side
    53,215.20x = 3,452,182,260.48
  5. Step 5: Solve for x
    x = 3,452,182,260.48/53,215.20
  6. Step 6: Final answer
    x = 64,872.11

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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.