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Finding the Fourth Proportional to 51,522.30, 77,246.55 and 19,905.30

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Solution

The fourth proportional to 51,522.30, 77,246.55 and 19,905.30 is: 29,843.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,522.30 : 77,246.55 = 19,905.30 : x
  2. Step 2: Convert to fraction form
    51,522.30/77,246.55 = 19,905.30/x
  3. Step 3: Cross multiply
    51,522.30x = 77,246.55 × 19,905.30
  4. Step 4: Simplify right side
    51,522.30x = 1,537,615,751.72
  5. Step 5: Solve for x
    x = 1,537,615,751.72/51,522.30
  6. Step 6: Final answer
    x = 29,843.69

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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.