Home / 81,162.54-121,639.86-34,351.02

Finding the Fourth Proportional to 81,162.54, 121,639.86 and 34,351.02

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Solution

The fourth proportional to 81,162.54, 121,639.86 and 34,351.02 is: 51,482.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,162.54 : 121,639.86 = 34,351.02 : x
  2. Step 2: Convert to fraction form
    81,162.54/121,639.86 = 34,351.02/x
  3. Step 3: Cross multiply
    81,162.54x = 121,639.86 × 34,351.02
  4. Step 4: Simplify right side
    81,162.54x = 4,178,453,263.66
  5. Step 5: Solve for x
    x = 4,178,453,263.66/81,162.54
  6. Step 6: Final answer
    x = 51,482.53

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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.