Home / 30,339,939.10-45,509,908.65-20,136,271.90

Finding the Fourth Proportional to 30,339,939.10, 45,509,908.65 and 20,136,271.90

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Solution

The fourth proportional to 30,339,939.10, 45,509,908.65 and 20,136,271.90 is: 30,204,407.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,339,939.10 : 45,509,908.65 = 20,136,271.90 : x
  2. Step 2: Convert to fraction form
    30,339,939.10/45,509,908.65 = 20,136,271.90/x
  3. Step 3: Cross multiply
    30,339,939.10x = 45,509,908.65 × 20,136,271.90
  4. Step 4: Simplify right side
    30,339,939.10x = 916,399,894,720,561.88
  5. Step 5: Solve for x
    x = 916,399,894,720,561.88/30,339,939.10
  6. Step 6: Final answer
    x = 30,204,407.85

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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.