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Finding the Fourth Proportional to 72,843.80, 109,200.90 and 47,895.80

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Solution

The fourth proportional to 72,843.80, 109,200.90 and 47,895.80 is: 71,801.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,843.80 : 109,200.90 = 47,895.80 : x
  2. Step 2: Convert to fraction form
    72,843.80/109,200.90 = 47,895.80/x
  3. Step 3: Cross multiply
    72,843.80x = 109,200.90 × 47,895.80
  4. Step 4: Simplify right side
    72,843.80x = 5,230,264,466.22
  5. Step 5: Solve for x
    x = 5,230,264,466.22/72,843.80
  6. Step 6: Final answer
    x = 71,801.09

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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.