Home / 74,757.42-112,136.11-51,312.78

Finding the Fourth Proportional to 74,757.42, 112,136.11 and 51,312.78

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Solution

The fourth proportional to 74,757.42, 112,136.11 and 51,312.78 is: 76,969.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,757.42 : 112,136.11 = 51,312.78 : x
  2. Step 2: Convert to fraction form
    74,757.42/112,136.11 = 51,312.78/x
  3. Step 3: Cross multiply
    74,757.42x = 112,136.11 × 51,312.78
  4. Step 4: Simplify right side
    74,757.42x = 5,754,015,542.49
  5. Step 5: Solve for x
    x = 5,754,015,542.49/74,757.42
  6. Step 6: Final answer
    x = 76,969.16

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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.