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Finding the Fourth Proportional to 70,955.40, 106,332.93 and 39,379.44

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Solution

The fourth proportional to 70,955.40, 106,332.93 and 39,379.44 is: 59,013.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,955.40 : 106,332.93 = 39,379.44 : x
  2. Step 2: Convert to fraction form
    70,955.40/106,332.93 = 39,379.44/x
  3. Step 3: Cross multiply
    70,955.40x = 106,332.93 × 39,379.44
  4. Step 4: Simplify right side
    70,955.40x = 4,187,331,236.96
  5. Step 5: Solve for x
    x = 4,187,331,236.96/70,955.40
  6. Step 6: Final answer
    x = 59,013.57

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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.