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Finding the Fourth Proportional to 70,803.85, 97,710.29 and 38,974.09

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Solution

The fourth proportional to 70,803.85, 97,710.29 and 38,974.09 is: 53,784.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,803.85 : 97,710.29 = 38,974.09 : x
  2. Step 2: Convert to fraction form
    70,803.85/97,710.29 = 38,974.09/x
  3. Step 3: Cross multiply
    70,803.85x = 97,710.29 × 38,974.09
  4. Step 4: Simplify right side
    70,803.85x = 3,808,169,636.39
  5. Step 5: Solve for x
    x = 3,808,169,636.39/70,803.85
  6. Step 6: Final answer
    x = 53,784.78

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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.