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Finding the Fourth Proportional to 51,397.70, 77,107.88 and 21,840.80

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Solution

The fourth proportional to 51,397.70, 77,107.88 and 21,840.80 is: 32,766.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,397.70 : 77,107.88 = 21,840.80 : x
  2. Step 2: Convert to fraction form
    51,397.70/77,107.88 = 21,840.80/x
  3. Step 3: Cross multiply
    51,397.70x = 77,107.88 × 21,840.80
  4. Step 4: Simplify right side
    51,397.70x = 1,684,097,290.76
  5. Step 5: Solve for x
    x = 1,684,097,290.76/51,397.70
  6. Step 6: Final answer
    x = 32,766.01

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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.