Home / 65,139.20-97,773.60-31,896.80

Finding the Fourth Proportional to 65,139.20, 97,773.60 and 31,896.80

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Solution

The fourth proportional to 65,139.20, 97,773.60 and 31,896.80 is: 47,876.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,139.20 : 97,773.60 = 31,896.80 : x
  2. Step 2: Convert to fraction form
    65,139.20/97,773.60 = 31,896.80/x
  3. Step 3: Cross multiply
    65,139.20x = 97,773.60 × 31,896.80
  4. Step 4: Simplify right side
    65,139.20x = 3,118,664,964.48
  5. Step 5: Solve for x
    x = 3,118,664,964.48/65,139.20
  6. Step 6: Final answer
    x = 47,876.93

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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.