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Finding the Fourth Proportional to 88,420.54, 122,006.64 and 50,687.50

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Solution

The fourth proportional to 88,420.54, 122,006.64 and 50,687.50 is: 69,940.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,420.54 : 122,006.64 = 50,687.50 : x
  2. Step 2: Convert to fraction form
    88,420.54/122,006.64 = 50,687.50/x
  3. Step 3: Cross multiply
    88,420.54x = 122,006.64 × 50,687.50
  4. Step 4: Simplify right side
    88,420.54x = 6,184,211,565
  5. Step 5: Solve for x
    x = 6,184,211,565/88,420.54
  6. Step 6: Final answer
    x = 69,940.89

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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.