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Finding the Fourth Proportional to 65,448,145.80, 98,172,218.70 and 55,370,449.80

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Solution

The fourth proportional to 65,448,145.80, 98,172,218.70 and 55,370,449.80 is: 83,055,674.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,448,145.80 : 98,172,218.70 = 55,370,449.80 : x
  2. Step 2: Convert to fraction form
    65,448,145.80/98,172,218.70 = 55,370,449.80/x
  3. Step 3: Cross multiply
    65,448,145.80x = 98,172,218.70 × 55,370,449.80
  4. Step 4: Simplify right side
    65,448,145.80x = 5,435,839,907,282,971
  5. Step 5: Solve for x
    x = 5,435,839,907,282,971/65,448,145.80
  6. Step 6: Final answer
    x = 83,055,674.70

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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.