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Finding the Fourth Proportional to 45,840.81, 68,788.02 and 19,184.57

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Solution

The fourth proportional to 45,840.81, 68,788.02 and 19,184.57 is: 28,788.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,840.81 : 68,788.02 = 19,184.57 : x
  2. Step 2: Convert to fraction form
    45,840.81/68,788.02 = 19,184.57/x
  3. Step 3: Cross multiply
    45,840.81x = 68,788.02 × 19,184.57
  4. Step 4: Simplify right side
    45,840.81x = 1,319,668,215.47
  5. Step 5: Solve for x
    x = 1,319,668,215.47/45,840.81
  6. Step 6: Final answer
    x = 28,788.07

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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.