Home / 70,911.10-97,850.79-40,690.30

Finding the Fourth Proportional to 70,911.10, 97,850.79 and 40,690.30

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Solution

The fourth proportional to 70,911.10, 97,850.79 and 40,690.30 is: 56,148.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,911.10 : 97,850.79 = 40,690.30 : x
  2. Step 2: Convert to fraction form
    70,911.10/97,850.79 = 40,690.30/x
  3. Step 3: Cross multiply
    70,911.10x = 97,850.79 × 40,690.30
  4. Step 4: Simplify right side
    70,911.10x = 3,981,578,000.34
  5. Step 5: Solve for x
    x = 3,981,578,000.34/70,911.10
  6. Step 6: Final answer
    x = 56,148.87

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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.