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Finding the Fourth Proportional to 85,320, 117,727.02 and 49,501.80

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Solution

The fourth proportional to 85,320, 117,727.02 and 49,501.80 is: 68,304.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,320 : 117,727.02 = 49,501.80 : x
  2. Step 2: Convert to fraction form
    85,320/117,727.02 = 49,501.80/x
  3. Step 3: Cross multiply
    85,320x = 117,727.02 × 49,501.80
  4. Step 4: Simplify right side
    85,320x = 5,827,699,398.64
  5. Step 5: Solve for x
    x = 5,827,699,398.64/85,320
  6. Step 6: Final answer
    x = 68,304.02

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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.