Home / 31,439,877.21-47,159,815.82-8,720,774.46

Finding the Fourth Proportional to 31,439,877.21, 47,159,815.82 and 8,720,774.46

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Solution

The fourth proportional to 31,439,877.21, 47,159,815.82 and 8,720,774.46 is: 13,081,161.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,439,877.21 : 47,159,815.82 = 8,720,774.46 : x
  2. Step 2: Convert to fraction form
    31,439,877.21/47,159,815.82 = 8,720,774.46/x
  3. Step 3: Cross multiply
    31,439,877.21x = 47,159,815.82 × 8,720,774.46
  4. Step 4: Simplify right side
    31,439,877.21x = 411,270,117,297,756.12
  5. Step 5: Solve for x
    x = 411,270,117,297,756.12/31,439,877.21
  6. Step 6: Final answer
    x = 13,081,161.69

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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.