Home / 99,621.12-149,431.68-57,565.44

Finding the Fourth Proportional to 99,621.12, 149,431.68 and 57,565.44

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Solution

The fourth proportional to 99,621.12, 149,431.68 and 57,565.44 is: 86,348.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,621.12 : 149,431.68 = 57,565.44 : x
  2. Step 2: Convert to fraction form
    99,621.12/149,431.68 = 57,565.44/x
  3. Step 3: Cross multiply
    99,621.12x = 149,431.68 × 57,565.44
  4. Step 4: Simplify right side
    99,621.12x = 8,602,100,409.14
  5. Step 5: Solve for x
    x = 8,602,100,409.14/99,621.12
  6. Step 6: Final answer
    x = 86,348.16

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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.