Home / 30,297,205.20-45,445,807.80-21,050,131.80

Finding the Fourth Proportional to 30,297,205.20, 45,445,807.80 and 21,050,131.80

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Solution

The fourth proportional to 30,297,205.20, 45,445,807.80 and 21,050,131.80 is: 31,575,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,297,205.20 : 45,445,807.80 = 21,050,131.80 : x
  2. Step 2: Convert to fraction form
    30,297,205.20/45,445,807.80 = 21,050,131.80/x
  3. Step 3: Cross multiply
    30,297,205.20x = 45,445,807.80 × 21,050,131.80
  4. Step 4: Simplify right side
    30,297,205.20x = 956,640,243,947,468
  5. Step 5: Solve for x
    x = 956,640,243,947,468/30,297,205.20
  6. Step 6: Final answer
    x = 31,575,197.70

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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.