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Finding the Fourth Proportional to 71,008.60, 97,996.62 and 40,803.76

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Solution

The fourth proportional to 71,008.60, 97,996.62 and 40,803.76 is: 56,311.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,008.60 : 97,996.62 = 40,803.76 : x
  2. Step 2: Convert to fraction form
    71,008.60/97,996.62 = 40,803.76/x
  3. Step 3: Cross multiply
    71,008.60x = 97,996.62 × 40,803.76
  4. Step 4: Simplify right side
    71,008.60x = 3,998,630,563.29
  5. Step 5: Solve for x
    x = 3,998,630,563.29/71,008.60
  6. Step 6: Final answer
    x = 56,311.92

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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.