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Finding the Fourth Proportional to 61,681.48, 85,121.58 and 36,206.08

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Solution

The fourth proportional to 61,681.48, 85,121.58 and 36,206.08 is: 49,965.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,681.48 : 85,121.58 = 36,206.08 : x
  2. Step 2: Convert to fraction form
    61,681.48/85,121.58 = 36,206.08/x
  3. Step 3: Cross multiply
    61,681.48x = 85,121.58 × 36,206.08
  4. Step 4: Simplify right side
    61,681.48x = 3,081,918,735.21
  5. Step 5: Solve for x
    x = 3,081,918,735.21/61,681.48
  6. Step 6: Final answer
    x = 49,965.06

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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.