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Finding the Fourth Proportional to 45,252, 67,879.83 and 21,547.35

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Solution

The fourth proportional to 45,252, 67,879.83 and 21,547.35 is: 32,321.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,252 : 67,879.83 = 21,547.35 : x
  2. Step 2: Convert to fraction form
    45,252/67,879.83 = 21,547.35/x
  3. Step 3: Cross multiply
    45,252x = 67,879.83 × 21,547.35
  4. Step 4: Simplify right side
    45,252x = 1,462,630,454.95
  5. Step 5: Solve for x
    x = 1,462,630,454.95/45,252
  6. Step 6: Final answer
    x = 32,321.90

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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.