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Finding the Fourth Proportional to 102,593.50, 153,898.89 and 28,721.50

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Solution

The fourth proportional to 102,593.50, 153,898.89 and 28,721.50 is: 43,084.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,593.50 : 153,898.89 = 28,721.50 : x
  2. Step 2: Convert to fraction form
    102,593.50/153,898.89 = 28,721.50/x
  3. Step 3: Cross multiply
    102,593.50x = 153,898.89 × 28,721.50
  4. Step 4: Simplify right side
    102,593.50x = 4,420,206,969.14
  5. Step 5: Solve for x
    x = 4,420,206,969.14/102,593.50
  6. Step 6: Final answer
    x = 43,084.67

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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.