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Finding the Fourth Proportional to 60,715.76, 91,073.64 and 19,166

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Solution

The fourth proportional to 60,715.76, 91,073.64 and 19,166 is: 28,749

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,715.76 : 91,073.64 = 19,166 : x
  2. Step 2: Convert to fraction form
    60,715.76/91,073.64 = 19,166/x
  3. Step 3: Cross multiply
    60,715.76x = 91,073.64 × 19,166
  4. Step 4: Simplify right side
    60,715.76x = 1,745,517,384.24
  5. Step 5: Solve for x
    x = 1,745,517,384.24/60,715.76
  6. Step 6: Final answer
    x = 28,749

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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.