Home / 30,891,761.49-42,627,813-18,330,651.27

Finding the Fourth Proportional to 30,891,761.49, 42,627,813 and 18,330,651.27

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Solution

The fourth proportional to 30,891,761.49, 42,627,813 and 18,330,651.27 is: 25,294,626.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,891,761.49 : 42,627,813 = 18,330,651.27 : x
  2. Step 2: Convert to fraction form
    30,891,761.49/42,627,813 = 18,330,651.27/x
  3. Step 3: Cross multiply
    30,891,761.49x = 42,627,813 × 18,330,651.27
  4. Step 4: Simplify right side
    30,891,761.49x = 781,395,574,505,772.50
  5. Step 5: Solve for x
    x = 781,395,574,505,772.50/30,891,761.49
  6. Step 6: Final answer
    x = 25,294,626.68

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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.