Home / 57,311.20-85,977.52-19,869.60

Finding the Fourth Proportional to 57,311.20, 85,977.52 and 19,869.60

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Solution

The fourth proportional to 57,311.20, 85,977.52 and 19,869.60 is: 29,808.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,311.20 : 85,977.52 = 19,869.60 : x
  2. Step 2: Convert to fraction form
    57,311.20/85,977.52 = 19,869.60/x
  3. Step 3: Cross multiply
    57,311.20x = 85,977.52 × 19,869.60
  4. Step 4: Simplify right side
    57,311.20x = 1,708,338,931.39
  5. Step 5: Solve for x
    x = 1,708,338,931.39/57,311.20
  6. Step 6: Final answer
    x = 29,808.12

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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.