Home / 99,621.60-149,388.38-28,528.12

Finding the Fourth Proportional to 99,621.60, 149,388.38 and 28,528.12

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Solution

The fourth proportional to 99,621.60, 149,388.38 and 28,528.12 is: 42,779.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,621.60 : 149,388.38 = 28,528.12 : x
  2. Step 2: Convert to fraction form
    99,621.60/149,388.38 = 28,528.12/x
  3. Step 3: Cross multiply
    99,621.60x = 149,388.38 × 28,528.12
  4. Step 4: Simplify right side
    99,621.60x = 4,261,769,102.48
  5. Step 5: Solve for x
    x = 4,261,769,102.48/99,621.60
  6. Step 6: Final answer
    x = 42,779.57

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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.