Home / 70,934.40-106,315.20-31,449.60

Finding the Fourth Proportional to 70,934.40, 106,315.20 and 31,449.60

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Solution

The fourth proportional to 70,934.40, 106,315.20 and 31,449.60 is: 47,136.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,934.40 : 106,315.20 = 31,449.60 : x
  2. Step 2: Convert to fraction form
    70,934.40/106,315.20 = 31,449.60/x
  3. Step 3: Cross multiply
    70,934.40x = 106,315.20 × 31,449.60
  4. Step 4: Simplify right side
    70,934.40x = 3,343,570,513.92
  5. Step 5: Solve for x
    x = 3,343,570,513.92/70,934.40
  6. Step 6: Final answer
    x = 47,136.09

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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.