Home / 51,520.78-77,308.53-20,356.30

Finding the Fourth Proportional to 51,520.78, 77,308.53 and 20,356.30

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Solution

The fourth proportional to 51,520.78, 77,308.53 and 20,356.30 is: 30,545.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,520.78 : 77,308.53 = 20,356.30 : x
  2. Step 2: Convert to fraction form
    51,520.78/77,308.53 = 20,356.30/x
  3. Step 3: Cross multiply
    51,520.78x = 77,308.53 × 20,356.30
  4. Step 4: Simplify right side
    51,520.78x = 1,573,715,629.24
  5. Step 5: Solve for x
    x = 1,573,715,629.24/51,520.78
  6. Step 6: Final answer
    x = 30,545.26

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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.