Home / 31,455,888.40-47,089,354.20-18,669,811.60

Finding the Fourth Proportional to 31,455,888.40, 47,089,354.20 and 18,669,811.60

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Solution

The fourth proportional to 31,455,888.40, 47,089,354.20 and 18,669,811.60 is: 27,948,642.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455,888.40 : 47,089,354.20 = 18,669,811.60 : x
  2. Step 2: Convert to fraction form
    31,455,888.40/47,089,354.20 = 18,669,811.60/x
  3. Step 3: Cross multiply
    31,455,888.40x = 47,089,354.20 × 18,669,811.60
  4. Step 4: Simplify right side
    31,455,888.40x = 879,149,371,279,668.88
  5. Step 5: Solve for x
    x = 879,149,371,279,668.88/31,455,888.40
  6. Step 6: Final answer
    x = 27,948,642.24

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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.