Home / 81,929.32-122,894.67-25,768.12

Finding the Fourth Proportional to 81,929.32, 122,894.67 and 25,768.12

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Solution

The fourth proportional to 81,929.32, 122,894.67 and 25,768.12 is: 38,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,929.32 : 122,894.67 = 25,768.12 : x
  2. Step 2: Convert to fraction form
    81,929.32/122,894.67 = 25,768.12/x
  3. Step 3: Cross multiply
    81,929.32x = 122,894.67 × 25,768.12
  4. Step 4: Simplify right side
    81,929.32x = 3,166,764,603.92
  5. Step 5: Solve for x
    x = 3,166,764,603.92/81,929.32
  6. Step 6: Final answer
    x = 38,652.40

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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.