Home / 81,398.68-121,999.60-41,934.26

Finding the Fourth Proportional to 81,398.68, 121,999.60 and 41,934.26

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Solution

The fourth proportional to 81,398.68, 121,999.60 and 41,934.26 is: 62,850.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,398.68 : 121,999.60 = 41,934.26 : x
  2. Step 2: Convert to fraction form
    81,398.68/121,999.60 = 41,934.26/x
  3. Step 3: Cross multiply
    81,398.68x = 121,999.60 × 41,934.26
  4. Step 4: Simplify right side
    81,398.68x = 5,115,963,303.71
  5. Step 5: Solve for x
    x = 5,115,963,303.71/81,398.68
  6. Step 6: Final answer
    x = 62,850.69

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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.