Home / 72,839,405.20-109,259,107.80-72,414,252.40

Finding the Fourth Proportional to 72,839,405.20, 109,259,107.80 and 72,414,252.40

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Solution

The fourth proportional to 72,839,405.20, 109,259,107.80 and 72,414,252.40 is: 108,621,378.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,839,405.20 : 109,259,107.80 = 72,414,252.40 : x
  2. Step 2: Convert to fraction form
    72,839,405.20/109,259,107.80 = 72,414,252.40/x
  3. Step 3: Cross multiply
    72,839,405.20x = 109,259,107.80 × 72,414,252.40
  4. Step 4: Simplify right side
    72,839,405.20x = 7,911,916,609,228,009
  5. Step 5: Solve for x
    x = 7,911,916,609,228,009/72,839,405.20
  6. Step 6: Final answer
    x = 108,621,378.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.