Home / 70,905.11-106,346.72-31,455.27

Finding the Fourth Proportional to 70,905.11, 106,346.72 and 31,455.27

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Solution

The fourth proportional to 70,905.11, 106,346.72 and 31,455.27 is: 47,178.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,905.11 : 106,346.72 = 31,455.27 : x
  2. Step 2: Convert to fraction form
    70,905.11/106,346.72 = 31,455.27/x
  3. Step 3: Cross multiply
    70,905.11x = 106,346.72 × 31,455.27
  4. Step 4: Simplify right side
    70,905.11x = 3,345,164,869.85
  5. Step 5: Solve for x
    x = 3,345,164,869.85/70,905.11
  6. Step 6: Final answer
    x = 47,178.05

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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.