Home / 90,390.09-135,541.38-31,205.01

Finding the Fourth Proportional to 90,390.09, 135,541.38 and 31,205.01

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Solution

The fourth proportional to 90,390.09, 135,541.38 and 31,205.01 is: 46,792.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,390.09 : 135,541.38 = 31,205.01 : x
  2. Step 2: Convert to fraction form
    90,390.09/135,541.38 = 31,205.01/x
  3. Step 3: Cross multiply
    90,390.09x = 135,541.38 × 31,205.01
  4. Step 4: Simplify right side
    90,390.09x = 4,229,570,118.31
  5. Step 5: Solve for x
    x = 4,229,570,118.31/90,390.09
  6. Step 6: Final answer
    x = 46,792.41

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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.