Home / 90,867.16-136,322.32-28,537.68

Finding the Fourth Proportional to 90,867.16, 136,322.32 and 28,537.68

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Solution

The fourth proportional to 90,867.16, 136,322.32 and 28,537.68 is: 42,813.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,867.16 : 136,322.32 = 28,537.68 : x
  2. Step 2: Convert to fraction form
    90,867.16/136,322.32 = 28,537.68/x
  3. Step 3: Cross multiply
    90,867.16x = 136,322.32 × 28,537.68
  4. Step 4: Simplify right side
    90,867.16x = 3,890,322,745.02
  5. Step 5: Solve for x
    x = 3,890,322,745.02/90,867.16
  6. Step 6: Final answer
    x = 42,813.30

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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.