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Finding the Fourth Proportional to 70,527.68, 105,801.40 and 20,611.44

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Solution

The fourth proportional to 70,527.68, 105,801.40 and 20,611.44 is: 30,920.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,527.68 : 105,801.40 = 20,611.44 : x
  2. Step 2: Convert to fraction form
    70,527.68/105,801.40 = 20,611.44/x
  3. Step 3: Cross multiply
    70,527.68x = 105,801.40 × 20,611.44
  4. Step 4: Simplify right side
    70,527.68x = 2,180,719,208.02
  5. Step 5: Solve for x
    x = 2,180,719,208.02/70,527.68
  6. Step 6: Final answer
    x = 30,920.05

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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.