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Finding the Fourth Proportional to 67,986.80, 101,980.20 and 52,434.80

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Solution

The fourth proportional to 67,986.80, 101,980.20 and 52,434.80 is: 78,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,986.80 : 101,980.20 = 52,434.80 : x
  2. Step 2: Convert to fraction form
    67,986.80/101,980.20 = 52,434.80/x
  3. Step 3: Cross multiply
    67,986.80x = 101,980.20 × 52,434.80
  4. Step 4: Simplify right side
    67,986.80x = 5,347,311,390.96
  5. Step 5: Solve for x
    x = 5,347,311,390.96/67,986.80
  6. Step 6: Final answer
    x = 78,652.20

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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.