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Finding the Fourth Proportional to 88,081.70, 121,531.66 and 50,346.50

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Solution

The fourth proportional to 88,081.70, 121,531.66 and 50,346.50 is: 69,466.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,081.70 : 121,531.66 = 50,346.50 : x
  2. Step 2: Convert to fraction form
    88,081.70/121,531.66 = 50,346.50/x
  3. Step 3: Cross multiply
    88,081.70x = 121,531.66 × 50,346.50
  4. Step 4: Simplify right side
    88,081.70x = 6,118,692,986.67
  5. Step 5: Solve for x
    x = 6,118,692,986.67/88,081.70
  6. Step 6: Final answer
    x = 69,466.11

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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.