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Finding the Fourth Proportional to 30,318.66, 45,472.57 and 10,602.87

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Solution

The fourth proportional to 30,318.66, 45,472.57 and 10,602.87 is: 15,902.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,318.66 : 45,472.57 = 10,602.87 : x
  2. Step 2: Convert to fraction form
    30,318.66/45,472.57 = 10,602.87/x
  3. Step 3: Cross multiply
    30,318.66x = 45,472.57 × 10,602.87
  4. Step 4: Simplify right side
    30,318.66x = 482,139,748.28
  5. Step 5: Solve for x
    x = 482,139,748.28/30,318.66
  6. Step 6: Final answer
    x = 15,902.41

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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.