Home / 38,638,280.80-57,957,421.20-20,722,376.80

Finding the Fourth Proportional to 38,638,280.80, 57,957,421.20 and 20,722,376.80

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Solution

The fourth proportional to 38,638,280.80, 57,957,421.20 and 20,722,376.80 is: 31,083,565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,638,280.80 : 57,957,421.20 = 20,722,376.80 : x
  2. Step 2: Convert to fraction form
    38,638,280.80/57,957,421.20 = 20,722,376.80/x
  3. Step 3: Cross multiply
    38,638,280.80x = 57,957,421.20 × 20,722,376.80
  4. Step 4: Simplify right side
    38,638,280.80x = 1,201,015,520,462,708.25
  5. Step 5: Solve for x
    x = 1,201,015,520,462,708.25/38,638,280.80
  6. Step 6: Final answer
    x = 31,083,565.20

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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.