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Finding the Fourth Proportional to 77,990.80, 117,005.10 and 22,586.80

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Solution

The fourth proportional to 77,990.80, 117,005.10 and 22,586.80 is: 33,885.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,990.80 : 117,005.10 = 22,586.80 : x
  2. Step 2: Convert to fraction form
    77,990.80/117,005.10 = 22,586.80/x
  3. Step 3: Cross multiply
    77,990.80x = 117,005.10 × 22,586.80
  4. Step 4: Simplify right side
    77,990.80x = 2,642,770,792.68
  5. Step 5: Solve for x
    x = 2,642,770,792.68/77,990.80
  6. Step 6: Final answer
    x = 33,885.67

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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.