Home / 90,568.24-135,914.63-31,403.90

Finding the Fourth Proportional to 90,568.24, 135,914.63 and 31,403.90

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Solution

The fourth proportional to 90,568.24, 135,914.63 and 31,403.90 is: 47,127.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,568.24 : 135,914.63 = 31,403.90 : x
  2. Step 2: Convert to fraction form
    90,568.24/135,914.63 = 31,403.90/x
  3. Step 3: Cross multiply
    90,568.24x = 135,914.63 × 31,403.90
  4. Step 4: Simplify right side
    90,568.24x = 4,268,249,449.06
  5. Step 5: Solve for x
    x = 4,268,249,449.06/90,568.24
  6. Step 6: Final answer
    x = 47,127.44

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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.