Home / 90,010.46-135,040.23-39,400.28

Finding the Fourth Proportional to 90,010.46, 135,040.23 and 39,400.28

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Solution

The fourth proportional to 90,010.46, 135,040.23 and 39,400.28 is: 59,111.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,010.46 : 135,040.23 = 39,400.28 : x
  2. Step 2: Convert to fraction form
    90,010.46/135,040.23 = 39,400.28/x
  3. Step 3: Cross multiply
    90,010.46x = 135,040.23 × 39,400.28
  4. Step 4: Simplify right side
    90,010.46x = 5,320,622,873.26
  5. Step 5: Solve for x
    x = 5,320,622,873.26/90,010.46
  6. Step 6: Final answer
    x = 59,111.16

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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.