Home / 83,620,015.20-125,430,022.80-66,401,326.80

Finding the Fourth Proportional to 83,620,015.20, 125,430,022.80 and 66,401,326.80

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Solution

The fourth proportional to 83,620,015.20, 125,430,022.80 and 66,401,326.80 is: 99,601,990.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,620,015.20 : 125,430,022.80 = 66,401,326.80 : x
  2. Step 2: Convert to fraction form
    83,620,015.20/125,430,022.80 = 66,401,326.80/x
  3. Step 3: Cross multiply
    83,620,015.20x = 125,430,022.80 × 66,401,326.80
  4. Step 4: Simplify right side
    83,620,015.20x = 8,328,719,934,474,250
  5. Step 5: Solve for x
    x = 8,328,719,934,474,250/83,620,015.20
  6. Step 6: Final answer
    x = 99,601,990.20

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1.5x scale

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.