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Finding the Fourth Proportional to 77,304.97, 106,679.86 and 43,312.87

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Solution

The fourth proportional to 77,304.97, 106,679.86 and 43,312.87 is: 59,771.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,304.97 : 106,679.86 = 43,312.87 : x
  2. Step 2: Convert to fraction form
    77,304.97/106,679.86 = 43,312.87/x
  3. Step 3: Cross multiply
    77,304.97x = 106,679.86 × 43,312.87
  4. Step 4: Simplify right side
    77,304.97x = 4,620,610,907.80
  5. Step 5: Solve for x
    x = 4,620,610,907.80/77,304.97
  6. Step 6: Final answer
    x = 59,771.20

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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.