Home / 90,365.36-135,563.56-31,187.16

Finding the Fourth Proportional to 90,365.36, 135,563.56 and 31,187.16

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Solution

The fourth proportional to 90,365.36, 135,563.56 and 31,187.16 is: 46,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,365.36 : 135,563.56 = 31,187.16 : x
  2. Step 2: Convert to fraction form
    90,365.36/135,563.56 = 31,187.16/x
  3. Step 3: Cross multiply
    90,365.36x = 135,563.56 × 31,187.16
  4. Step 4: Simplify right side
    90,365.36x = 4,227,842,435.89
  5. Step 5: Solve for x
    x = 4,227,842,435.89/90,365.36
  6. Step 6: Final answer
    x = 46,786.10

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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.