Home / 51,604.80-77,407.20-31,905.60

Finding the Fourth Proportional to 51,604.80, 77,407.20 and 31,905.60

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Solution

The fourth proportional to 51,604.80, 77,407.20 and 31,905.60 is: 47,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,604.80 : 77,407.20 = 31,905.60 : x
  2. Step 2: Convert to fraction form
    51,604.80/77,407.20 = 31,905.60/x
  3. Step 3: Cross multiply
    51,604.80x = 77,407.20 × 31,905.60
  4. Step 4: Simplify right side
    51,604.80x = 2,469,723,160.32
  5. Step 5: Solve for x
    x = 2,469,723,160.32/51,604.80
  6. Step 6: Final answer
    x = 47,858.40

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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.