Home / 51,391.20-77,087.04-21,801.60

Finding the Fourth Proportional to 51,391.20, 77,087.04 and 21,801.60

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Solution

The fourth proportional to 51,391.20, 77,087.04 and 21,801.60 is: 32,702.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,391.20 : 77,087.04 = 21,801.60 : x
  2. Step 2: Convert to fraction form
    51,391.20/77,087.04 = 21,801.60/x
  3. Step 3: Cross multiply
    51,391.20x = 77,087.04 × 21,801.60
  4. Step 4: Simplify right side
    51,391.20x = 1,680,620,811.26
  5. Step 5: Solve for x
    x = 1,680,620,811.26/51,391.20
  6. Step 6: Final answer
    x = 32,702.50

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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.