Home / 43,879,939.60-65,819,909.40-21,205,123.60

Finding the Fourth Proportional to 43,879,939.60, 65,819,909.40 and 21,205,123.60

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Solution

The fourth proportional to 43,879,939.60, 65,819,909.40 and 21,205,123.60 is: 31,807,685.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,879,939.60 : 65,819,909.40 = 21,205,123.60 : x
  2. Step 2: Convert to fraction form
    43,879,939.60/65,819,909.40 = 21,205,123.60/x
  3. Step 3: Cross multiply
    43,879,939.60x = 65,819,909.40 × 21,205,123.60
  4. Step 4: Simplify right side
    43,879,939.60x = 1,395,719,314,167,802
  5. Step 5: Solve for x
    x = 1,395,719,314,167,802/43,879,939.60
  6. Step 6: Final answer
    x = 31,807,685.40

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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.