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Finding the Fourth Proportional to 45,318, 67,959.65 and 14,916

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Solution

The fourth proportional to 45,318, 67,959.65 and 14,916 is: 22,368.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,318 : 67,959.65 = 14,916 : x
  2. Step 2: Convert to fraction form
    45,318/67,959.65 = 14,916/x
  3. Step 3: Cross multiply
    45,318x = 67,959.65 × 14,916
  4. Step 4: Simplify right side
    45,318x = 1,013,686,064.82
  5. Step 5: Solve for x
    x = 1,013,686,064.82/45,318
  6. Step 6: Final answer
    x = 22,368.29

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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.