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Finding the Fourth Proportional to 88,861.56, 122,639.76 and 51,135

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Solution

The fourth proportional to 88,861.56, 122,639.76 and 51,135 is: 70,572.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,861.56 : 122,639.76 = 51,135 : x
  2. Step 2: Convert to fraction form
    88,861.56/122,639.76 = 51,135/x
  3. Step 3: Cross multiply
    88,861.56x = 122,639.76 × 51,135
  4. Step 4: Simplify right side
    88,861.56x = 6,271,184,127.60
  5. Step 5: Solve for x
    x = 6,271,184,127.60/88,861.56
  6. Step 6: Final answer
    x = 70,572.52

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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.