Home / 90,261.19-135,404.75-31,080.97

Finding the Fourth Proportional to 90,261.19, 135,404.75 and 31,080.97

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Solution

The fourth proportional to 90,261.19, 135,404.75 and 31,080.97 is: 46,625.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,261.19 : 135,404.75 = 31,080.97 : x
  2. Step 2: Convert to fraction form
    90,261.19/135,404.75 = 31,080.97/x
  3. Step 3: Cross multiply
    90,261.19x = 135,404.75 × 31,080.97
  4. Step 4: Simplify right side
    90,261.19x = 4,208,510,972.61
  5. Step 5: Solve for x
    x = 4,208,510,972.61/90,261.19
  6. Step 6: Final answer
    x = 46,625.92

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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.