Home / 81,792.21-122,688.33-25,632.30

Finding the Fourth Proportional to 81,792.21, 122,688.33 and 25,632.30

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Solution

The fourth proportional to 81,792.21, 122,688.33 and 25,632.30 is: 38,448.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,792.21 : 122,688.33 = 25,632.30 : x
  2. Step 2: Convert to fraction form
    81,792.21/122,688.33 = 25,632.30/x
  3. Step 3: Cross multiply
    81,792.21x = 122,688.33 × 25,632.30
  4. Step 4: Simplify right side
    81,792.21x = 3,144,784,081.06
  5. Step 5: Solve for x
    x = 3,144,784,081.06/81,792.21
  6. Step 6: Final answer
    x = 38,448.45

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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.