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Finding the Fourth Proportional to 74,998.59, 103,504.43 and 42,743.08

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Solution

The fourth proportional to 74,998.59, 103,504.43 and 42,743.08 is: 58,989.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,998.59 : 103,504.43 = 42,743.08 : x
  2. Step 2: Convert to fraction form
    74,998.59/103,504.43 = 42,743.08/x
  3. Step 3: Cross multiply
    74,998.59x = 103,504.43 × 42,743.08
  4. Step 4: Simplify right side
    74,998.59x = 4,424,097,785.87
  5. Step 5: Solve for x
    x = 4,424,097,785.87/74,998.59
  6. Step 6: Final answer
    x = 58,989.08

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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.