Home / 90,255.92-135,384.14-31,090.84

Finding the Fourth Proportional to 90,255.92, 135,384.14 and 31,090.84

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Solution

The fourth proportional to 90,255.92, 135,384.14 and 31,090.84 is: 46,636.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,255.92 : 135,384.14 = 31,090.84 : x
  2. Step 2: Convert to fraction form
    90,255.92/135,384.14 = 31,090.84/x
  3. Step 3: Cross multiply
    90,255.92x = 135,384.14 × 31,090.84
  4. Step 4: Simplify right side
    90,255.92x = 4,209,206,635.28
  5. Step 5: Solve for x
    x = 4,209,206,635.28/90,255.92
  6. Step 6: Final answer
    x = 46,636.35

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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.