Home / 70,788.20-97,689.65-38,959.11

Finding the Fourth Proportional to 70,788.20, 97,689.65 and 38,959.11

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Solution

The fourth proportional to 70,788.20, 97,689.65 and 38,959.11 is: 53,764.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,788.20 : 97,689.65 = 38,959.11 : x
  2. Step 2: Convert to fraction form
    70,788.20/97,689.65 = 38,959.11/x
  3. Step 3: Cross multiply
    70,788.20x = 97,689.65 × 38,959.11
  4. Step 4: Simplify right side
    70,788.20x = 3,805,901,625.42
  5. Step 5: Solve for x
    x = 3,805,901,625.42/70,788.20
  6. Step 6: Final answer
    x = 53,764.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.