Home / 90,210.44-135,314.19-31,046.64

Finding the Fourth Proportional to 90,210.44, 135,314.19 and 31,046.64

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Solution

The fourth proportional to 90,210.44, 135,314.19 and 31,046.64 is: 46,569.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,210.44 : 135,314.19 = 31,046.64 : x
  2. Step 2: Convert to fraction form
    90,210.44/135,314.19 = 31,046.64/x
  3. Step 3: Cross multiply
    90,210.44x = 135,314.19 × 31,046.64
  4. Step 4: Simplify right side
    90,210.44x = 4,201,050,943.82
  5. Step 5: Solve for x
    x = 4,201,050,943.82/90,210.44
  6. Step 6: Final answer
    x = 46,569.46

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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.