Home / 70,394.28-97,119.80-40,157.78

Finding the Fourth Proportional to 70,394.28, 97,119.80 and 40,157.78

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Solution

The fourth proportional to 70,394.28, 97,119.80 and 40,157.78 is: 55,403.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,394.28 : 97,119.80 = 40,157.78 : x
  2. Step 2: Convert to fraction form
    70,394.28/97,119.80 = 40,157.78/x
  3. Step 3: Cross multiply
    70,394.28x = 97,119.80 × 40,157.78
  4. Step 4: Simplify right side
    70,394.28x = 3,900,115,562.04
  5. Step 5: Solve for x
    x = 3,900,115,562.04/70,394.28
  6. Step 6: Final answer
    x = 55,403.87

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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.