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Finding the Fourth Proportional to 70,973.11, 106,441.48 and 21,041.53

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Solution

The fourth proportional to 70,973.11, 106,441.48 and 21,041.53 is: 31,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,973.11 : 106,441.48 = 21,041.53 : x
  2. Step 2: Convert to fraction form
    70,973.11/106,441.48 = 21,041.53/x
  3. Step 3: Cross multiply
    70,973.11x = 106,441.48 × 21,041.53
  4. Step 4: Simplify right side
    70,973.11x = 2,239,691,594.66
  5. Step 5: Solve for x
    x = 2,239,691,594.66/70,973.11
  6. Step 6: Final answer
    x = 31,556.90

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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.