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Finding the Fourth Proportional to 70,507.31, 105,793.26 and 30,538.52

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Solution

The fourth proportional to 70,507.31, 105,793.26 and 30,538.52 is: 45,821.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,507.31 : 105,793.26 = 30,538.52 : x
  2. Step 2: Convert to fraction form
    70,507.31/105,793.26 = 30,538.52/x
  3. Step 3: Cross multiply
    70,507.31x = 105,793.26 × 30,538.52
  4. Step 4: Simplify right side
    70,507.31x = 3,230,768,981.06
  5. Step 5: Solve for x
    x = 3,230,768,981.06/70,507.31
  6. Step 6: Final answer
    x = 45,821.76

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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.