Home / 81,374.32-121,962.92-34,528.78

Finding the Fourth Proportional to 81,374.32, 121,962.92 and 34,528.78

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Solution

The fourth proportional to 81,374.32, 121,962.92 and 34,528.78 is: 51,751.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,374.32 : 121,962.92 = 34,528.78 : x
  2. Step 2: Convert to fraction form
    81,374.32/121,962.92 = 34,528.78/x
  3. Step 3: Cross multiply
    81,374.32x = 121,962.92 × 34,528.78
  4. Step 4: Simplify right side
    81,374.32x = 4,211,230,812.65
  5. Step 5: Solve for x
    x = 4,211,230,812.65/81,374.32
  6. Step 6: Final answer
    x = 51,751.35

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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.