Home / 55,312,190.80-82,928,964.60-21,220,363.60

Finding the Fourth Proportional to 55,312,190.80, 82,928,964.60 and 21,220,363.60

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Solution

The fourth proportional to 55,312,190.80, 82,928,964.60 and 21,220,363.60 is: 31,815,459.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,312,190.80 : 82,928,964.60 = 21,220,363.60 : x
  2. Step 2: Convert to fraction form
    55,312,190.80/82,928,964.60 = 21,220,363.60/x
  3. Step 3: Cross multiply
    55,312,190.80x = 82,928,964.60 × 21,220,363.60
  4. Step 4: Simplify right side
    55,312,190.80x = 1,759,782,781,783,528.50
  5. Step 5: Solve for x
    x = 1,759,782,781,783,528.50/55,312,190.80
  6. Step 6: Final answer
    x = 31,815,459.78

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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.