Home / 48,116.40-72,136.20-20,391.60

Finding the Fourth Proportional to 48,116.40, 72,136.20 and 20,391.60

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Solution

The fourth proportional to 48,116.40, 72,136.20 and 20,391.60 is: 30,571.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,116.40 : 72,136.20 = 20,391.60 : x
  2. Step 2: Convert to fraction form
    48,116.40/72,136.20 = 20,391.60/x
  3. Step 3: Cross multiply
    48,116.40x = 72,136.20 × 20,391.60
  4. Step 4: Simplify right side
    48,116.40x = 1,470,972,535.92
  5. Step 5: Solve for x
    x = 1,470,972,535.92/48,116.40
  6. Step 6: Final answer
    x = 30,571.13

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1.5x scale

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.