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Finding the Fourth Proportional to 35,312.78, 48,745.52 and 21,162.89

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Solution

The fourth proportional to 35,312.78, 48,745.52 and 21,162.89 is: 29,213.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,312.78 : 48,745.52 = 21,162.89 : x
  2. Step 2: Convert to fraction form
    35,312.78/48,745.52 = 21,162.89/x
  3. Step 3: Cross multiply
    35,312.78x = 48,745.52 × 21,162.89
  4. Step 4: Simplify right side
    35,312.78x = 1,031,596,077.75
  5. Step 5: Solve for x
    x = 1,031,596,077.75/35,312.78
  6. Step 6: Final answer
    x = 29,213.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.