Home / 51,640.80-77,461.20-31,941.60

Finding the Fourth Proportional to 51,640.80, 77,461.20 and 31,941.60

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Solution

The fourth proportional to 51,640.80, 77,461.20 and 31,941.60 is: 47,912.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,640.80 : 77,461.20 = 31,941.60 : x
  2. Step 2: Convert to fraction form
    51,640.80/77,461.20 = 31,941.60/x
  3. Step 3: Cross multiply
    51,640.80x = 77,461.20 × 31,941.60
  4. Step 4: Simplify right side
    51,640.80x = 2,474,234,665.92
  5. Step 5: Solve for x
    x = 2,474,234,665.92/51,640.80
  6. Step 6: Final answer
    x = 47,912.40

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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.