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Finding the Fourth Proportional to 70,393.28, 97,142.74 and 38,563.30

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Solution

The fourth proportional to 70,393.28, 97,142.74 and 38,563.30 is: 53,217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,393.28 : 97,142.74 = 38,563.30 : x
  2. Step 2: Convert to fraction form
    70,393.28/97,142.74 = 38,563.30/x
  3. Step 3: Cross multiply
    70,393.28x = 97,142.74 × 38,563.30
  4. Step 4: Simplify right side
    70,393.28x = 3,746,144,625.44
  5. Step 5: Solve for x
    x = 3,746,144,625.44/70,393.28
  6. Step 6: Final answer
    x = 53,217.36

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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.