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Finding the Fourth Proportional to 60,155.76, 90,242.28 and 18,606

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Solution

The fourth proportional to 60,155.76, 90,242.28 and 18,606 is: 27,911.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,155.76 : 90,242.28 = 18,606 : x
  2. Step 2: Convert to fraction form
    60,155.76/90,242.28 = 18,606/x
  3. Step 3: Cross multiply
    60,155.76x = 90,242.28 × 18,606
  4. Step 4: Simplify right side
    60,155.76x = 1,679,047,861.68
  5. Step 5: Solve for x
    x = 1,679,047,861.68/60,155.76
  6. Step 6: Final answer
    x = 27,911.67

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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.