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Finding the Fourth Proportional to 88,780, 122,516.40 and 49,038.56

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Solution

The fourth proportional to 88,780, 122,516.40 and 49,038.56 is: 67,673.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,780 : 122,516.40 = 49,038.56 : x
  2. Step 2: Convert to fraction form
    88,780/122,516.40 = 49,038.56/x
  3. Step 3: Cross multiply
    88,780x = 122,516.40 × 49,038.56
  4. Step 4: Simplify right side
    88,780x = 6,008,027,832.38
  5. Step 5: Solve for x
    x = 6,008,027,832.38/88,780
  6. Step 6: Final answer
    x = 67,673.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.