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Finding the Fourth Proportional to 93.11, 139.61 and 52.53

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Solution

The fourth proportional to 93.11, 139.61 and 52.53 is: 78.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.11 : 139.61 = 52.53 : x
  2. Step 2: Convert to fraction form
    93.11/139.61 = 52.53/x
  3. Step 3: Cross multiply
    93.11x = 139.61 × 52.53
  4. Step 4: Simplify right side
    93.11x = 7,333.45
  5. Step 5: Solve for x
    x = 7,333.45/93.11
  6. Step 6: Final answer
    x = 78.77

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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.