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Finding the Fourth Proportional to 56,369.90, 84,547.56 and 21,305

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Solution

The fourth proportional to 56,369.90, 84,547.56 and 21,305 is: 31,954.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,369.90 : 84,547.56 = 21,305 : x
  2. Step 2: Convert to fraction form
    56,369.90/84,547.56 = 21,305/x
  3. Step 3: Cross multiply
    56,369.90x = 84,547.56 × 21,305
  4. Step 4: Simplify right side
    56,369.90x = 1,801,285,765.80
  5. Step 5: Solve for x
    x = 1,801,285,765.80/56,369.90
  6. Step 6: Final answer
    x = 31,954.74

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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.