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Finding the Fourth Proportional to 70,997.10, 97,980.75 and 40,792.20

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Solution

The fourth proportional to 70,997.10, 97,980.75 and 40,792.20 is: 56,295.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,997.10 : 97,980.75 = 40,792.20 : x
  2. Step 2: Convert to fraction form
    70,997.10/97,980.75 = 40,792.20/x
  3. Step 3: Cross multiply
    70,997.10x = 97,980.75 × 40,792.20
  4. Step 4: Simplify right side
    70,997.10x = 3,996,850,350.15
  5. Step 5: Solve for x
    x = 3,996,850,350.15/70,997.10
  6. Step 6: Final answer
    x = 56,295.97

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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.