Home / 31,505,938.40-47,164,429.20-18,719,861.60

Finding the Fourth Proportional to 31,505,938.40, 47,164,429.20 and 18,719,861.60

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Solution

The fourth proportional to 31,505,938.40, 47,164,429.20 and 18,719,861.60 is: 28,023,656.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,505,938.40 : 47,164,429.20 = 18,719,861.60 : x
  2. Step 2: Convert to fraction form
    31,505,938.40/47,164,429.20 = 18,719,861.60/x
  3. Step 3: Cross multiply
    31,505,938.40x = 47,164,429.20 × 18,719,861.60
  4. Step 4: Simplify right side
    31,505,938.40x = 882,911,587,066,998.88
  5. Step 5: Solve for x
    x = 882,911,587,066,998.88/31,505,938.40
  6. Step 6: Final answer
    x = 28,023,656.23

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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.