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Finding the Fourth Proportional to 70,959.45, 106,480.50 and 39,395.91

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Solution

The fourth proportional to 70,959.45, 106,480.50 and 39,395.91 is: 59,116.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,959.45 : 106,480.50 = 39,395.91 : x
  2. Step 2: Convert to fraction form
    70,959.45/106,480.50 = 39,395.91/x
  3. Step 3: Cross multiply
    70,959.45x = 106,480.50 × 39,395.91
  4. Step 4: Simplify right side
    70,959.45x = 4,194,896,194.76
  5. Step 5: Solve for x
    x = 4,194,896,194.76/70,959.45
  6. Step 6: Final answer
    x = 59,116.81

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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.