Home / 30,579,678.15-45,815,708.71-28,759,161.03

Finding the Fourth Proportional to 30,579,678.15, 45,815,708.71 and 28,759,161.03

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Solution

The fourth proportional to 30,579,678.15, 45,815,708.71 and 28,759,161.03 is: 43,088,136.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579,678.15 : 45,815,708.71 = 28,759,161.03 : x
  2. Step 2: Convert to fraction form
    30,579,678.15/45,815,708.71 = 28,759,161.03/x
  3. Step 3: Cross multiply
    30,579,678.15x = 45,815,708.71 × 28,759,161.03
  4. Step 4: Simplify right side
    30,579,678.15x = 1,317,621,344,494,463.75
  5. Step 5: Solve for x
    x = 1,317,621,344,494,463.75/30,579,678.15
  6. Step 6: Final answer
    x = 43,088,136.44

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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.