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Finding the Fourth Proportional to 61,644.72, 85,063.50 and 34,785.63

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Solution

The fourth proportional to 61,644.72, 85,063.50 and 34,785.63 is: 48,000.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,644.72 : 85,063.50 = 34,785.63 : x
  2. Step 2: Convert to fraction form
    61,644.72/85,063.50 = 34,785.63/x
  3. Step 3: Cross multiply
    61,644.72x = 85,063.50 × 34,785.63
  4. Step 4: Simplify right side
    61,644.72x = 2,958,987,437.51
  5. Step 5: Solve for x
    x = 2,958,987,437.51/61,644.72
  6. Step 6: Final answer
    x = 48,000.66

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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.