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Finding the Fourth Proportional to 51,209.40, 76,862.70 and 43,822.20

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Solution

The fourth proportional to 51,209.40, 76,862.70 and 43,822.20 is: 65,774.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,209.40 : 76,862.70 = 43,822.20 : x
  2. Step 2: Convert to fraction form
    51,209.40/76,862.70 = 43,822.20/x
  3. Step 3: Cross multiply
    51,209.40x = 76,862.70 × 43,822.20
  4. Step 4: Simplify right side
    51,209.40x = 3,368,292,611.94
  5. Step 5: Solve for x
    x = 3,368,292,611.94/51,209.40
  6. Step 6: Final answer
    x = 65,774.89

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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.