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Finding the Fourth Proportional to 61,345.35, 84,620.50 and 38,644.29

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Solution

The fourth proportional to 61,345.35, 84,620.50 and 38,644.29 is: 53,306.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,345.35 : 84,620.50 = 38,644.29 : x
  2. Step 2: Convert to fraction form
    61,345.35/84,620.50 = 38,644.29/x
  3. Step 3: Cross multiply
    61,345.35x = 84,620.50 × 38,644.29
  4. Step 4: Simplify right side
    61,345.35x = 3,270,099,045.33
  5. Step 5: Solve for x
    x = 3,270,099,045.33/61,345.35
  6. Step 6: Final answer
    x = 53,306.39

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1.5x scale

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.