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Finding the Fourth Proportional to 102,756.79, 154,104.05 and 39,572.06

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Solution

The fourth proportional to 102,756.79, 154,104.05 and 39,572.06 is: 59,346.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,756.79 : 154,104.05 = 39,572.06 : x
  2. Step 2: Convert to fraction form
    102,756.79/154,104.05 = 39,572.06/x
  3. Step 3: Cross multiply
    102,756.79x = 154,104.05 × 39,572.06
  4. Step 4: Simplify right side
    102,756.79x = 6,098,214,174.49
  5. Step 5: Solve for x
    x = 6,098,214,174.49/102,756.79
  6. Step 6: Final answer
    x = 59,346.09

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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.