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Finding the Fourth Proportional to 68,783.94, 94,918.50 and 38,572.56

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Solution

The fourth proportional to 68,783.94, 94,918.50 and 38,572.56 is: 53,228.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,783.94 : 94,918.50 = 38,572.56 : x
  2. Step 2: Convert to fraction form
    68,783.94/94,918.50 = 38,572.56/x
  3. Step 3: Cross multiply
    68,783.94x = 94,918.50 × 38,572.56
  4. Step 4: Simplify right side
    68,783.94x = 3,661,249,536.36
  5. Step 5: Solve for x
    x = 3,661,249,536.36/68,783.94
  6. Step 6: Final answer
    x = 53,228.26

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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.