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Finding the Fourth Proportional to 57,303.88, 79,078.11 and 31,808.77

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Solution

The fourth proportional to 57,303.88, 79,078.11 and 31,808.77 is: 43,895.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,303.88 : 79,078.11 = 31,808.77 : x
  2. Step 2: Convert to fraction form
    57,303.88/79,078.11 = 31,808.77/x
  3. Step 3: Cross multiply
    57,303.88x = 79,078.11 × 31,808.77
  4. Step 4: Simplify right side
    57,303.88x = 2,515,377,413.02
  5. Step 5: Solve for x
    x = 2,515,377,413.02/57,303.88
  6. Step 6: Final answer
    x = 43,895.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.