Home / 39,765.16-54,877.44-21,861.64

Finding the Fourth Proportional to 39,765.16, 54,877.44 and 21,861.64

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Solution

The fourth proportional to 39,765.16, 54,877.44 and 21,861.64 is: 30,169.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,765.16 : 54,877.44 = 21,861.64 : x
  2. Step 2: Convert to fraction form
    39,765.16/54,877.44 = 21,861.64/x
  3. Step 3: Cross multiply
    39,765.16x = 54,877.44 × 21,861.64
  4. Step 4: Simplify right side
    39,765.16x = 1,199,710,837.40
  5. Step 5: Solve for x
    x = 1,199,710,837.40/39,765.16
  6. Step 6: Final answer
    x = 30,169.90

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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.