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Finding the Fourth Proportional to 45,239.59, 67,848.45 and 18,964

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Solution

The fourth proportional to 45,239.59, 67,848.45 and 18,964 is: 28,441.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,239.59 : 67,848.45 = 18,964 : x
  2. Step 2: Convert to fraction form
    45,239.59/67,848.45 = 18,964/x
  3. Step 3: Cross multiply
    45,239.59x = 67,848.45 × 18,964
  4. Step 4: Simplify right side
    45,239.59x = 1,286,678,005.80
  5. Step 5: Solve for x
    x = 1,286,678,005.80/45,239.59
  6. Step 6: Final answer
    x = 28,441.42

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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.