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Finding the Fourth Proportional to 70,142.40, 96,695.82 and 43,266.78

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Solution

The fourth proportional to 70,142.40, 96,695.82 and 43,266.78 is: 59,646.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,142.40 : 96,695.82 = 43,266.78 : x
  2. Step 2: Convert to fraction form
    70,142.40/96,695.82 = 43,266.78/x
  3. Step 3: Cross multiply
    70,142.40x = 96,695.82 × 43,266.78
  4. Step 4: Simplify right side
    70,142.40x = 4,183,716,770.86
  5. Step 5: Solve for x
    x = 4,183,716,770.86/70,142.40
  6. Step 6: Final answer
    x = 59,646.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.