Home / 31,455,861.40-47,089,313.70-18,669,784.60

Finding the Fourth Proportional to 31,455,861.40, 47,089,313.70 and 18,669,784.60

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Solution

The fourth proportional to 31,455,861.40, 47,089,313.70 and 18,669,784.60 is: 27,948,601.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455,861.40 : 47,089,313.70 = 18,669,784.60 : x
  2. Step 2: Convert to fraction form
    31,455,861.40/47,089,313.70 = 18,669,784.60/x
  3. Step 3: Cross multiply
    31,455,861.40x = 47,089,313.70 × 18,669,784.60
  4. Step 4: Simplify right side
    31,455,861.40x = 879,147,343,740,829.12
  5. Step 5: Solve for x
    x = 879,147,343,740,829.12/31,455,861.40
  6. Step 6: Final answer
    x = 27,948,601.77

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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.