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Finding the Fourth Proportional to 45,344.40, 68,040.90 and 19,051.80

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Solution

The fourth proportional to 45,344.40, 68,040.90 and 19,051.80 is: 28,587.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,344.40 : 68,040.90 = 19,051.80 : x
  2. Step 2: Convert to fraction form
    45,344.40/68,040.90 = 19,051.80/x
  3. Step 3: Cross multiply
    45,344.40x = 68,040.90 × 19,051.80
  4. Step 4: Simplify right side
    45,344.40x = 1,296,301,618.62
  5. Step 5: Solve for x
    x = 1,296,301,618.62/45,344.40
  6. Step 6: Final answer
    x = 28,587.91

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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.