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Finding the Fourth Proportional to 70,930.11, 97,892.42 and 40,724.90

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Solution

The fourth proportional to 70,930.11, 97,892.42 and 40,724.90 is: 56,205.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,930.11 : 97,892.42 = 40,724.90 : x
  2. Step 2: Convert to fraction form
    70,930.11/97,892.42 = 40,724.90/x
  3. Step 3: Cross multiply
    70,930.11x = 97,892.42 × 40,724.90
  4. Step 4: Simplify right side
    70,930.11x = 3,986,659,015.26
  5. Step 5: Solve for x
    x = 3,986,659,015.26/70,930.11
  6. Step 6: Final answer
    x = 56,205.45

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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.