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Finding the Fourth Proportional to 70,508.81, 105,795.51 and 30,540.02

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Solution

The fourth proportional to 70,508.81, 105,795.51 and 30,540.02 is: 45,824.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,508.81 : 105,795.51 = 30,540.02 : x
  2. Step 2: Convert to fraction form
    70,508.81/105,795.51 = 30,540.02/x
  3. Step 3: Cross multiply
    70,508.81x = 105,795.51 × 30,540.02
  4. Step 4: Simplify right side
    70,508.81x = 3,230,996,462.33
  5. Step 5: Solve for x
    x = 3,230,996,462.33/70,508.81
  6. Step 6: Final answer
    x = 45,824.01

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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.