Home / 43,454,918.80-65,107,728.60-20,686,790.80

Finding the Fourth Proportional to 43,454,918.80, 65,107,728.60 and 20,686,790.80

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Solution

The fourth proportional to 43,454,918.80, 65,107,728.60 and 20,686,790.80 is: 30,994,649.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,454,918.80 : 65,107,728.60 = 20,686,790.80 : x
  2. Step 2: Convert to fraction form
    43,454,918.80/65,107,728.60 = 20,686,790.80/x
  3. Step 3: Cross multiply
    43,454,918.80x = 65,107,728.60 × 20,686,790.80
  4. Step 4: Simplify right side
    43,454,918.80x = 1,346,869,961,011,377
  5. Step 5: Solve for x
    x = 1,346,869,961,011,377/43,454,918.80
  6. Step 6: Final answer
    x = 30,994,649.13

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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.