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Finding the Fourth Proportional to 51,007.80, 76,338.90 and 51,007.80

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Solution

The fourth proportional to 51,007.80, 76,338.90 and 51,007.80 is: 76,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,007.80 : 76,338.90 = 51,007.80 : x
  2. Step 2: Convert to fraction form
    51,007.80/76,338.90 = 51,007.80/x
  3. Step 3: Cross multiply
    51,007.80x = 76,338.90 × 51,007.80
  4. Step 4: Simplify right side
    51,007.80x = 3,893,879,343.42
  5. Step 5: Solve for x
    x = 3,893,879,343.42/51,007.80
  6. Step 6: Final answer
    x = 76,338.90

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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.