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Finding the Fourth Proportional to 51,480, 77,154.72 and 21,863.04

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Solution

The fourth proportional to 51,480, 77,154.72 and 21,863.04 is: 32,766.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,480 : 77,154.72 = 21,863.04 : x
  2. Step 2: Convert to fraction form
    51,480/77,154.72 = 21,863.04/x
  3. Step 3: Cross multiply
    51,480x = 77,154.72 × 21,863.04
  4. Step 4: Simplify right side
    51,480x = 1,686,836,729.55
  5. Step 5: Solve for x
    x = 1,686,836,729.55/51,480
  6. Step 6: Final answer
    x = 32,766.84

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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.