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Finding the Fourth Proportional to 45,389.40, 68,059.80 and 19,064.40

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Solution

The fourth proportional to 45,389.40, 68,059.80 and 19,064.40 is: 28,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,389.40 : 68,059.80 = 19,064.40 : x
  2. Step 2: Convert to fraction form
    45,389.40/68,059.80 = 19,064.40/x
  3. Step 3: Cross multiply
    45,389.40x = 68,059.80 × 19,064.40
  4. Step 4: Simplify right side
    45,389.40x = 1,297,519,251.12
  5. Step 5: Solve for x
    x = 1,297,519,251.12/45,389.40
  6. Step 6: Final answer
    x = 28,586.39

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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.