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Finding the Fourth Proportional to 123,670.55, 185,513.19 and 47,769.67

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Solution

The fourth proportional to 123,670.55, 185,513.19 and 47,769.67 is: 71,657.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,670.55 : 185,513.19 = 47,769.67 : x
  2. Step 2: Convert to fraction form
    123,670.55/185,513.19 = 47,769.67/x
  3. Step 3: Cross multiply
    123,670.55x = 185,513.19 × 47,769.67
  4. Step 4: Simplify right side
    123,670.55x = 8,861,903,866.95
  5. Step 5: Solve for x
    x = 8,861,903,866.95/123,670.55
  6. Step 6: Final answer
    x = 71,657.35

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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.