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Finding the Fourth Proportional to 70,372.35, 105,565.46 and 20,452.88

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Solution

The fourth proportional to 70,372.35, 105,565.46 and 20,452.88 is: 30,681.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,372.35 : 105,565.46 = 20,452.88 : x
  2. Step 2: Convert to fraction form
    70,372.35/105,565.46 = 20,452.88/x
  3. Step 3: Cross multiply
    70,372.35x = 105,565.46 × 20,452.88
  4. Step 4: Simplify right side
    70,372.35x = 2,159,117,847.17
  5. Step 5: Solve for x
    x = 2,159,117,847.17/70,372.35
  6. Step 6: Final answer
    x = 30,681.34

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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.