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Finding the Fourth Proportional to 70,996.60, 97,980.06 and 40,791.70

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Solution

The fourth proportional to 70,996.60, 97,980.06 and 40,791.70 is: 56,295.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,996.60 : 97,980.06 = 40,791.70 : x
  2. Step 2: Convert to fraction form
    70,996.60/97,980.06 = 40,791.70/x
  3. Step 3: Cross multiply
    70,996.60x = 97,980.06 × 40,791.70
  4. Step 4: Simplify right side
    70,996.60x = 3,996,773,213.50
  5. Step 5: Solve for x
    x = 3,996,773,213.50/70,996.60
  6. Step 6: Final answer
    x = 56,295.28

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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.