Home / 57,122.20-85,683.30-38,459.80

Finding the Fourth Proportional to 57,122.20, 85,683.30 and 38,459.80

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Solution

The fourth proportional to 57,122.20, 85,683.30 and 38,459.80 is: 57,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,122.20 : 85,683.30 = 38,459.80 : x
  2. Step 2: Convert to fraction form
    57,122.20/85,683.30 = 38,459.80/x
  3. Step 3: Cross multiply
    57,122.20x = 85,683.30 × 38,459.80
  4. Step 4: Simplify right side
    57,122.20x = 3,295,362,581.34
  5. Step 5: Solve for x
    x = 3,295,362,581.34/57,122.20
  6. Step 6: Final answer
    x = 57,689.70

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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.