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Finding the Fourth Proportional to 39,802.95, 54,926.69 and 21,897.77

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Solution

The fourth proportional to 39,802.95, 54,926.69 and 21,897.77 is: 30,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,802.95 : 54,926.69 = 21,897.77 : x
  2. Step 2: Convert to fraction form
    39,802.95/54,926.69 = 21,897.77/x
  3. Step 3: Cross multiply
    39,802.95x = 54,926.69 × 21,897.77
  4. Step 4: Simplify right side
    39,802.95x = 1,202,771,640.36
  5. Step 5: Solve for x
    x = 1,202,771,640.36/39,802.95
  6. Step 6: Final answer
    x = 30,218.15

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.