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Finding the Fourth Proportional to 35,779.78, 49,374.16 and 19,863.21

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Solution

The fourth proportional to 35,779.78, 49,374.16 and 19,863.21 is: 27,410.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,779.78 : 49,374.16 = 19,863.21 : x
  2. Step 2: Convert to fraction form
    35,779.78/49,374.16 = 19,863.21/x
  3. Step 3: Cross multiply
    35,779.78x = 49,374.16 × 19,863.21
  4. Step 4: Simplify right side
    35,779.78x = 980,729,308.65
  5. Step 5: Solve for x
    x = 980,729,308.65/35,779.78
  6. Step 6: Final answer
    x = 27,410.15

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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.