Home / 90,653.02-135,932.82-40,690.32

Finding the Fourth Proportional to 90,653.02, 135,932.82 and 40,690.32

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Solution

The fourth proportional to 90,653.02, 135,932.82 and 40,690.32 is: 61,014.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,653.02 : 135,932.82 = 40,690.32 : x
  2. Step 2: Convert to fraction form
    90,653.02/135,932.82 = 40,690.32/x
  3. Step 3: Cross multiply
    90,653.02x = 135,932.82 × 40,690.32
  4. Step 4: Simplify right side
    90,653.02x = 5,531,149,281.97
  5. Step 5: Solve for x
    x = 5,531,149,281.97/90,653.02
  6. Step 6: Final answer
    x = 61,014.51

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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.