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Finding the Fourth Proportional to 45,688.40, 68,537.40 and 14,516.40

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Solution

The fourth proportional to 45,688.40, 68,537.40 and 14,516.40 is: 21,776.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,688.40 : 68,537.40 = 14,516.40 : x
  2. Step 2: Convert to fraction form
    45,688.40/68,537.40 = 14,516.40/x
  3. Step 3: Cross multiply
    45,688.40x = 68,537.40 × 14,516.40
  4. Step 4: Simplify right side
    45,688.40x = 994,916,313.36
  5. Step 5: Solve for x
    x = 994,916,313.36/45,688.40
  6. Step 6: Final answer
    x = 21,776.13

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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.