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Finding the Fourth Proportional to 67,278.80, 100,918.20 and 32,200.40

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Solution

The fourth proportional to 67,278.80, 100,918.20 and 32,200.40 is: 48,300.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,278.80 : 100,918.20 = 32,200.40 : x
  2. Step 2: Convert to fraction form
    67,278.80/100,918.20 = 32,200.40/x
  3. Step 3: Cross multiply
    67,278.80x = 100,918.20 × 32,200.40
  4. Step 4: Simplify right side
    67,278.80x = 3,249,606,407.28
  5. Step 5: Solve for x
    x = 3,249,606,407.28/67,278.80
  6. Step 6: Final answer
    x = 48,300.60

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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.