Home / 90,605.62-125,098.31-56,629.38

Finding the Fourth Proportional to 90,605.62, 125,098.31 and 56,629.38

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Solution

The fourth proportional to 90,605.62, 125,098.31 and 56,629.38 is: 78,187.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,605.62 : 125,098.31 = 56,629.38 : x
  2. Step 2: Convert to fraction form
    90,605.62/125,098.31 = 56,629.38/x
  3. Step 3: Cross multiply
    90,605.62x = 125,098.31 × 56,629.38
  4. Step 4: Simplify right side
    90,605.62x = 7,084,239,322.82
  5. Step 5: Solve for x
    x = 7,084,239,322.82/90,605.62
  6. Step 6: Final answer
    x = 78,187.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.