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Finding the Fourth Proportional to 35,418.60, 53,127.81 and 9,121.14

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Solution

The fourth proportional to 35,418.60, 53,127.81 and 9,121.14 is: 13,681.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,418.60 : 53,127.81 = 9,121.14 : x
  2. Step 2: Convert to fraction form
    35,418.60/53,127.81 = 9,121.14/x
  3. Step 3: Cross multiply
    35,418.60x = 53,127.81 × 9,121.14
  4. Step 4: Simplify right side
    35,418.60x = 484,586,192.90
  5. Step 5: Solve for x
    x = 484,586,192.90/35,418.60
  6. Step 6: Final answer
    x = 13,681.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.