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Finding the Fourth Proportional to 53,930.20, 80,880.90 and 16,490.20

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Solution

The fourth proportional to 53,930.20, 80,880.90 and 16,490.20 is: 24,730.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,930.20 : 80,880.90 = 16,490.20 : x
  2. Step 2: Convert to fraction form
    53,930.20/80,880.90 = 16,490.20/x
  3. Step 3: Cross multiply
    53,930.20x = 80,880.90 × 16,490.20
  4. Step 4: Simplify right side
    53,930.20x = 1,333,742,217.18
  5. Step 5: Solve for x
    x = 1,333,742,217.18/53,930.20
  6. Step 6: Final answer
    x = 24,730.90

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1.5x scale

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.