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Finding the Fourth Proportional to 113,880.78, 170,706.83 and 38,949.71

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Solution

The fourth proportional to 113,880.78, 170,706.83 and 38,949.71 is: 58,385.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,880.78 : 170,706.83 = 38,949.71 : x
  2. Step 2: Convert to fraction form
    113,880.78/170,706.83 = 38,949.71/x
  3. Step 3: Cross multiply
    113,880.78x = 170,706.83 × 38,949.71
  4. Step 4: Simplify right side
    113,880.78x = 6,648,980,475.24
  5. Step 5: Solve for x
    x = 6,648,980,475.24/113,880.78
  6. Step 6: Final answer
    x = 58,385.45

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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.