Home / 81,292.32-121,938.48-34,512.36

Finding the Fourth Proportional to 81,292.32, 121,938.48 and 34,512.36

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Solution

The fourth proportional to 81,292.32, 121,938.48 and 34,512.36 is: 51,768.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,292.32 : 121,938.48 = 34,512.36 : x
  2. Step 2: Convert to fraction form
    81,292.32/121,938.48 = 34,512.36/x
  3. Step 3: Cross multiply
    81,292.32x = 121,938.48 × 34,512.36
  4. Step 4: Simplify right side
    81,292.32x = 4,208,384,719.61
  5. Step 5: Solve for x
    x = 4,208,384,719.61/81,292.32
  6. Step 6: Final answer
    x = 51,768.54

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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.