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Finding the Fourth Proportional to 78,907.48, 108,890.63 and 43,097.63

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Solution

The fourth proportional to 78,907.48, 108,890.63 and 43,097.63 is: 59,473.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,907.48 : 108,890.63 = 43,097.63 : x
  2. Step 2: Convert to fraction form
    78,907.48/108,890.63 = 43,097.63/x
  3. Step 3: Cross multiply
    78,907.48x = 108,890.63 × 43,097.63
  4. Step 4: Simplify right side
    78,907.48x = 4,692,928,082.21
  5. Step 5: Solve for x
    x = 4,692,928,082.21/78,907.48
  6. Step 6: Final answer
    x = 59,473.81

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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.