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Finding the Fourth Proportional to 35,379.01, 48,830.01 and 20,281.80

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Solution

The fourth proportional to 35,379.01, 48,830.01 and 20,281.80 is: 27,992.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,379.01 : 48,830.01 = 20,281.80 : x
  2. Step 2: Convert to fraction form
    35,379.01/48,830.01 = 20,281.80/x
  3. Step 3: Cross multiply
    35,379.01x = 48,830.01 × 20,281.80
  4. Step 4: Simplify right side
    35,379.01x = 990,360,603.87
  5. Step 5: Solve for x
    x = 990,360,603.87/35,379.01
  6. Step 6: Final answer
    x = 27,992.89

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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.