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Finding the Fourth Proportional to 84,019.44, 115,945.43 and 45,779.45

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Solution

The fourth proportional to 84,019.44, 115,945.43 and 45,779.45 is: 63,174.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,019.44 : 115,945.43 = 45,779.45 : x
  2. Step 2: Convert to fraction form
    84,019.44/115,945.43 = 45,779.45/x
  3. Step 3: Cross multiply
    84,019.44x = 115,945.43 × 45,779.45
  4. Step 4: Simplify right side
    84,019.44x = 5,307,917,206.79
  5. Step 5: Solve for x
    x = 5,307,917,206.79/84,019.44
  6. Step 6: Final answer
    x = 63,174.87

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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.