Home / 78,496,841.00-117,735,988.62-20,993,568.86

Finding the Fourth Proportional to 78,496,841.00, 117,735,988.62 and 20,993,568.86

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Solution

The fourth proportional to 78,496,841.00, 117,735,988.62 and 20,993,568.86 is: 31,487,873.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,496,841.00 : 117,735,988.62 = 20,993,568.86 : x
  2. Step 2: Convert to fraction form
    78,496,841.00/117,735,988.62 = 20,993,568.86/x
  3. Step 3: Cross multiply
    78,496,841.00x = 117,735,988.62 × 20,993,568.86
  4. Step 4: Simplify right side
    78,496,841.00x = 2,471,698,584,767,212.50
  5. Step 5: Solve for x
    x = 2,471,698,584,767,212.50/78,496,841.00
  6. Step 6: Final answer
    x = 31,487,873.31

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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.