Home / 90,322.28-135,433.65-31,109.12

Finding the Fourth Proportional to 90,322.28, 135,433.65 and 31,109.12

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Solution

The fourth proportional to 90,322.28, 135,433.65 and 31,109.12 is: 46,646.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,322.28 : 135,433.65 = 31,109.12 : x
  2. Step 2: Convert to fraction form
    90,322.28/135,433.65 = 31,109.12/x
  3. Step 3: Cross multiply
    90,322.28x = 135,433.65 × 31,109.12
  4. Step 4: Simplify right side
    90,322.28x = 4,213,221,669.89
  5. Step 5: Solve for x
    x = 4,213,221,669.89/90,322.28
  6. Step 6: Final answer
    x = 46,646.54

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1.5x scale

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.