Home / 90,878.58-136,329.24-30,091.32

Finding the Fourth Proportional to 90,878.58, 136,329.24 and 30,091.32

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Solution

The fourth proportional to 90,878.58, 136,329.24 and 30,091.32 is: 45,140.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,878.58 : 136,329.24 = 30,091.32 : x
  2. Step 2: Convert to fraction form
    90,878.58/136,329.24 = 30,091.32/x
  3. Step 3: Cross multiply
    90,878.58x = 136,329.24 × 30,091.32
  4. Step 4: Simplify right side
    90,878.58x = 4,102,326,786.20
  5. Step 5: Solve for x
    x = 4,102,326,786.20/90,878.58
  6. Step 6: Final answer
    x = 45,140.74

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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.