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Finding the Fourth Proportional to 51,125.40, 76,698.90 and 15,583.80

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Solution

The fourth proportional to 51,125.40, 76,698.90 and 15,583.80 is: 23,378.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,125.40 : 76,698.90 = 15,583.80 : x
  2. Step 2: Convert to fraction form
    51,125.40/76,698.90 = 15,583.80/x
  3. Step 3: Cross multiply
    51,125.40x = 76,698.90 × 15,583.80
  4. Step 4: Simplify right side
    51,125.40x = 1,195,260,317.82
  5. Step 5: Solve for x
    x = 1,195,260,317.82/51,125.40
  6. Step 6: Final answer
    x = 23,378.99

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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.