Home / 81,210.37-121,757.68-31,248.36

Finding the Fourth Proportional to 81,210.37, 121,757.68 and 31,248.36

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Solution

The fourth proportional to 81,210.37, 121,757.68 and 31,248.36 is: 46,850.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,210.37 : 121,757.68 = 31,248.36 : x
  2. Step 2: Convert to fraction form
    81,210.37/121,757.68 = 31,248.36/x
  3. Step 3: Cross multiply
    81,210.37x = 121,757.68 × 31,248.36
  4. Step 4: Simplify right side
    81,210.37x = 3,804,727,817.40
  5. Step 5: Solve for x
    x = 3,804,727,817.40/81,210.37
  6. Step 6: Final answer
    x = 46,850.27

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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.