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Finding the Fourth Proportional to 35,905.58, 49,548.80 and 19,989.68

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Solution

The fourth proportional to 35,905.58, 49,548.80 and 19,989.68 is: 27,585.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,905.58 : 49,548.80 = 19,989.68 : x
  2. Step 2: Convert to fraction form
    35,905.58/49,548.80 = 19,989.68/x
  3. Step 3: Cross multiply
    35,905.58x = 49,548.80 × 19,989.68
  4. Step 4: Simplify right side
    35,905.58x = 990,464,656.38
  5. Step 5: Solve for x
    x = 990,464,656.38/35,905.58
  6. Step 6: Final answer
    x = 27,585.26

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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.