Home / 99,788.40-149,688.72-40,591.56

Finding the Fourth Proportional to 99,788.40, 149,688.72 and 40,591.56

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Solution

The fourth proportional to 99,788.40, 149,688.72 and 40,591.56 is: 60,889.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,788.40 : 149,688.72 = 40,591.56 : x
  2. Step 2: Convert to fraction form
    99,788.40/149,688.72 = 40,591.56/x
  3. Step 3: Cross multiply
    99,788.40x = 149,688.72 × 40,591.56
  4. Step 4: Simplify right side
    99,788.40x = 6,076,098,659.20
  5. Step 5: Solve for x
    x = 6,076,098,659.20/99,788.40
  6. Step 6: Final answer
    x = 60,889.83

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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.