Home / 28,931,321.60-43,446,748.80-20,471,033.60

Finding the Fourth Proportional to 28,931,321.60, 43,446,748.80 and 20,471,033.60

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Solution

The fourth proportional to 28,931,321.60, 43,446,748.80 and 20,471,033.60 is: 30,741,763.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931,321.60 : 43,446,748.80 = 20,471,033.60 : x
  2. Step 2: Convert to fraction form
    28,931,321.60/43,446,748.80 = 20,471,033.60/x
  3. Step 3: Cross multiply
    28,931,321.60x = 43,446,748.80 × 20,471,033.60
  4. Step 4: Simplify right side
    28,931,321.60x = 889,399,854,495,559.62
  5. Step 5: Solve for x
    x = 889,399,854,495,559.62/28,931,321.60
  6. Step 6: Final answer
    x = 30,741,763.78

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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.