Home / 28,083,430.80-42,031,834.20-20,385,190.80

Finding the Fourth Proportional to 28,083,430.80, 42,031,834.20 and 20,385,190.80

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Solution

The fourth proportional to 28,083,430.80, 42,031,834.20 and 20,385,190.80 is: 30,510,052.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083,430.80 : 42,031,834.20 = 20,385,190.80 : x
  2. Step 2: Convert to fraction form
    28,083,430.80/42,031,834.20 = 20,385,190.80/x
  3. Step 3: Cross multiply
    28,083,430.80x = 42,031,834.20 × 20,385,190.80
  4. Step 4: Simplify right side
    28,083,430.80x = 856,826,959,840,965.50
  5. Step 5: Solve for x
    x = 856,826,959,840,965.50/28,083,430.80
  6. Step 6: Final answer
    x = 30,510,052.92

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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.