Home / 72,772.20-109,136.70-28,373.40

Finding the Fourth Proportional to 72,772.20, 109,136.70 and 28,373.40

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Solution

The fourth proportional to 72,772.20, 109,136.70 and 28,373.40 is: 42,551.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,772.20 : 109,136.70 = 28,373.40 : x
  2. Step 2: Convert to fraction form
    72,772.20/109,136.70 = 28,373.40/x
  3. Step 3: Cross multiply
    72,772.20x = 109,136.70 × 28,373.40
  4. Step 4: Simplify right side
    72,772.20x = 3,096,579,243.78
  5. Step 5: Solve for x
    x = 3,096,579,243.78/72,772.20
  6. Step 6: Final answer
    x = 42,551.68

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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.