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Finding the Fourth Proportional to 70,452.42, 105,697.02 and 20,531.46

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Solution

The fourth proportional to 70,452.42, 105,697.02 and 20,531.46 is: 30,802.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,452.42 : 105,697.02 = 20,531.46 : x
  2. Step 2: Convert to fraction form
    70,452.42/105,697.02 = 20,531.46/x
  3. Step 3: Cross multiply
    70,452.42x = 105,697.02 × 20,531.46
  4. Step 4: Simplify right side
    70,452.42x = 2,170,114,138.25
  5. Step 5: Solve for x
    x = 2,170,114,138.25/70,452.42
  6. Step 6: Final answer
    x = 30,802.55

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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.