Home / 31,455,899.40-47,089,370.70-18,669,822.60

Finding the Fourth Proportional to 31,455,899.40, 47,089,370.70 and 18,669,822.60

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Solution

The fourth proportional to 31,455,899.40, 47,089,370.70 and 18,669,822.60 is: 27,948,658.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455,899.40 : 47,089,370.70 = 18,669,822.60 : x
  2. Step 2: Convert to fraction form
    31,455,899.40/47,089,370.70 = 18,669,822.60/x
  3. Step 3: Cross multiply
    31,455,899.40x = 47,089,370.70 × 18,669,822.60
  4. Step 4: Simplify right side
    31,455,899.40x = 879,150,197,314,638
  5. Step 5: Solve for x
    x = 879,150,197,314,638/31,455,899.40
  6. Step 6: Final answer
    x = 27,948,658.73

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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.