Home / 78,734,528.80-118,101,793.20-21,232,612.60

Finding the Fourth Proportional to 78,734,528.80, 118,101,793.20 and 21,232,612.60

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Solution

The fourth proportional to 78,734,528.80, 118,101,793.20 and 21,232,612.60 is: 31,848,918.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,734,528.80 : 118,101,793.20 = 21,232,612.60 : x
  2. Step 2: Convert to fraction form
    78,734,528.80/118,101,793.20 = 21,232,612.60/x
  3. Step 3: Cross multiply
    78,734,528.80x = 118,101,793.20 × 21,232,612.60
  4. Step 4: Simplify right side
    78,734,528.80x = 2,507,609,622,380,914.50
  5. Step 5: Solve for x
    x = 2,507,609,622,380,914.50/78,734,528.80
  6. Step 6: Final answer
    x = 31,848,918.90

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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.