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Finding the Fourth Proportional to 57,311.80, 85,967.70 and 17,868.60

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Solution

The fourth proportional to 57,311.80, 85,967.70 and 17,868.60 is: 26,802.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,311.80 : 85,967.70 = 17,868.60 : x
  2. Step 2: Convert to fraction form
    57,311.80/85,967.70 = 17,868.60/x
  3. Step 3: Cross multiply
    57,311.80x = 85,967.70 × 17,868.60
  4. Step 4: Simplify right side
    57,311.80x = 1,536,122,444.22
  5. Step 5: Solve for x
    x = 1,536,122,444.22/57,311.80
  6. Step 6: Final answer
    x = 26,802.90

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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.