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Finding the Fourth Proportional to 53,880.90, 80,737.52 and 20,582.80

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Solution

The fourth proportional to 53,880.90, 80,737.52 and 20,582.80 is: 30,842.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,880.90 : 80,737.52 = 20,582.80 : x
  2. Step 2: Convert to fraction form
    53,880.90/80,737.52 = 20,582.80/x
  3. Step 3: Cross multiply
    53,880.90x = 80,737.52 × 20,582.80
  4. Step 4: Simplify right side
    53,880.90x = 1,661,804,226.66
  5. Step 5: Solve for x
    x = 1,661,804,226.66/53,880.90
  6. Step 6: Final answer
    x = 30,842.18

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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.