Home / 71,621.12-107,398.56-38,335.36

Finding the Fourth Proportional to 71,621.12, 107,398.56 and 38,335.36

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Solution

The fourth proportional to 71,621.12, 107,398.56 and 38,335.36 is: 57,485.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,621.12 : 107,398.56 = 38,335.36 : x
  2. Step 2: Convert to fraction form
    71,621.12/107,398.56 = 38,335.36/x
  3. Step 3: Cross multiply
    71,621.12x = 107,398.56 × 38,335.36
  4. Step 4: Simplify right side
    71,621.12x = 4,117,162,461.08
  5. Step 5: Solve for x
    x = 4,117,162,461.08/71,621.12
  6. Step 6: Final answer
    x = 57,485.31

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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.