Home / 43,879,961.60-65,819,942.40-21,205,145.60

Finding the Fourth Proportional to 43,879,961.60, 65,819,942.40 and 21,205,145.60

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Solution

The fourth proportional to 43,879,961.60, 65,819,942.40 and 21,205,145.60 is: 31,807,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,879,961.60 : 65,819,942.40 = 21,205,145.60 : x
  2. Step 2: Convert to fraction form
    43,879,961.60/65,819,942.40 = 21,205,145.60/x
  3. Step 3: Cross multiply
    43,879,961.60x = 65,819,942.40 × 21,205,145.60
  4. Step 4: Simplify right side
    43,879,961.60x = 1,395,721,461,975,613.50
  5. Step 5: Solve for x
    x = 1,395,721,461,975,613.50/43,879,961.60
  6. Step 6: Final answer
    x = 31,807,718.40

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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.