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Finding the Fourth Proportional to 73,200.60, 109,800.90 and 61,390.80

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Solution

The fourth proportional to 73,200.60, 109,800.90 and 61,390.80 is: 92,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,200.60 : 109,800.90 = 61,390.80 : x
  2. Step 2: Convert to fraction form
    73,200.60/109,800.90 = 61,390.80/x
  3. Step 3: Cross multiply
    73,200.60x = 109,800.90 × 61,390.80
  4. Step 4: Simplify right side
    73,200.60x = 6,740,765,091.72
  5. Step 5: Solve for x
    x = 6,740,765,091.72/73,200.60
  6. Step 6: Final answer
    x = 92,086.20

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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.