Home / 30,339,947.10-45,509,920.65-20,136,279.90

Finding the Fourth Proportional to 30,339,947.10, 45,509,920.65 and 20,136,279.90

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Solution

The fourth proportional to 30,339,947.10, 45,509,920.65 and 20,136,279.90 is: 30,204,419.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,339,947.10 : 45,509,920.65 = 20,136,279.90 : x
  2. Step 2: Convert to fraction form
    30,339,947.10/45,509,920.65 = 20,136,279.90/x
  3. Step 3: Cross multiply
    30,339,947.10x = 45,509,920.65 × 20,136,279.90
  4. Step 4: Simplify right side
    30,339,947.10x = 916,400,500,435,189.88
  5. Step 5: Solve for x
    x = 916,400,500,435,189.88/30,339,947.10
  6. Step 6: Final answer
    x = 30,204,419.85

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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.