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Finding the Fourth Proportional to 61,985.84, 85,514.28 and 36,830.48

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Solution

The fourth proportional to 61,985.84, 85,514.28 and 36,830.48 is: 50,810.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,985.84 : 85,514.28 = 36,830.48 : x
  2. Step 2: Convert to fraction form
    61,985.84/85,514.28 = 36,830.48/x
  3. Step 3: Cross multiply
    61,985.84x = 85,514.28 × 36,830.48
  4. Step 4: Simplify right side
    61,985.84x = 3,149,531,979.25
  5. Step 5: Solve for x
    x = 3,149,531,979.25/61,985.84
  6. Step 6: Final answer
    x = 50,810.51

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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.