Home / 81,680.32-122,537.48-25,518.16

Finding the Fourth Proportional to 81,680.32, 122,537.48 and 25,518.16

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Solution

The fourth proportional to 81,680.32, 122,537.48 and 25,518.16 is: 38,282.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,680.32 : 122,537.48 = 25,518.16 : x
  2. Step 2: Convert to fraction form
    81,680.32/122,537.48 = 25,518.16/x
  3. Step 3: Cross multiply
    81,680.32x = 122,537.48 × 25,518.16
  4. Step 4: Simplify right side
    81,680.32x = 3,126,931,020.64
  5. Step 5: Solve for x
    x = 3,126,931,020.64/81,680.32
  6. Step 6: Final answer
    x = 38,282.55

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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.