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Finding the Fourth Proportional to 64,991.66, 97,490.95 and 20,621.84

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Solution

The fourth proportional to 64,991.66, 97,490.95 and 20,621.84 is: 30,933.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,991.66 : 97,490.95 = 20,621.84 : x
  2. Step 2: Convert to fraction form
    64,991.66/97,490.95 = 20,621.84/x
  3. Step 3: Cross multiply
    64,991.66x = 97,490.95 × 20,621.84
  4. Step 4: Simplify right side
    64,991.66x = 2,010,442,233.34
  5. Step 5: Solve for x
    x = 2,010,442,233.34/64,991.66
  6. Step 6: Final answer
    x = 30,933.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.