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Finding the Fourth Proportional to 67,230.80, 100,846.20 and 42,347.60

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Solution

The fourth proportional to 67,230.80, 100,846.20 and 42,347.60 is: 63,521.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,230.80 : 100,846.20 = 42,347.60 : x
  2. Step 2: Convert to fraction form
    67,230.80/100,846.20 = 42,347.60/x
  3. Step 3: Cross multiply
    67,230.80x = 100,846.20 × 42,347.60
  4. Step 4: Simplify right side
    67,230.80x = 4,270,594,539.12
  5. Step 5: Solve for x
    x = 4,270,594,539.12/67,230.80
  6. Step 6: Final answer
    x = 63,521.40

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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.