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Finding the Fourth Proportional to 98,609.70, 147,744.45 and 45,911.10

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Solution

The fourth proportional to 98,609.70, 147,744.45 and 45,911.10 is: 68,787.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,609.70 : 147,744.45 = 45,911.10 : x
  2. Step 2: Convert to fraction form
    98,609.70/147,744.45 = 45,911.10/x
  3. Step 3: Cross multiply
    98,609.70x = 147,744.45 × 45,911.10
  4. Step 4: Simplify right side
    98,609.70x = 6,783,110,218.40
  5. Step 5: Solve for x
    x = 6,783,110,218.40/98,609.70
  6. Step 6: Final answer
    x = 68,787.45

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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.