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Finding the Fourth Proportional to 70,406.20, 105,680.12 and 62,452.80

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Solution

The fourth proportional to 70,406.20, 105,680.12 and 62,452.80 is: 93,742.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,406.20 : 105,680.12 = 62,452.80 : x
  2. Step 2: Convert to fraction form
    70,406.20/105,680.12 = 62,452.80/x
  3. Step 3: Cross multiply
    70,406.20x = 105,680.12 × 62,452.80
  4. Step 4: Simplify right side
    70,406.20x = 6,600,019,398.34
  5. Step 5: Solve for x
    x = 6,600,019,398.34/70,406.20
  6. Step 6: Final answer
    x = 93,742.02

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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.