Home / 28,757,041.80-43,156,986.20-21,100,471.75

Finding the Fourth Proportional to 28,757,041.80, 43,156,986.20 and 21,100,471.75

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Solution

The fourth proportional to 28,757,041.80, 43,156,986.20 and 21,100,471.75 is: 31,666,427.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,757,041.80 : 43,156,986.20 = 21,100,471.75 : x
  2. Step 2: Convert to fraction form
    28,757,041.80/43,156,986.20 = 21,100,471.75/x
  3. Step 3: Cross multiply
    28,757,041.80x = 43,156,986.20 × 21,100,471.75
  4. Step 4: Simplify right side
    28,757,041.80x = 910,632,768,128,239.88
  5. Step 5: Solve for x
    x = 910,632,768,128,239.88/28,757,041.80
  6. Step 6: Final answer
    x = 31,666,427.11

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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.