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Finding the Fourth Proportional to 70,806.97, 97,713.52 and 38,977.91

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Solution

The fourth proportional to 70,806.97, 97,713.52 and 38,977.91 is: 53,789.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,806.97 : 97,713.52 = 38,977.91 : x
  2. Step 2: Convert to fraction form
    70,806.97/97,713.52 = 38,977.91/x
  3. Step 3: Cross multiply
    70,806.97x = 97,713.52 × 38,977.91
  4. Step 4: Simplify right side
    70,806.97x = 3,808,668,788.34
  5. Step 5: Solve for x
    x = 3,808,668,788.34/70,806.97
  6. Step 6: Final answer
    x = 53,789.46

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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.