Home / 85,454.22-128,181.64-26,289.48

Finding the Fourth Proportional to 85,454.22, 128,181.64 and 26,289.48

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Solution

The fourth proportional to 85,454.22, 128,181.64 and 26,289.48 is: 39,434.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,454.22 : 128,181.64 = 26,289.48 : x
  2. Step 2: Convert to fraction form
    85,454.22/128,181.64 = 26,289.48/x
  3. Step 3: Cross multiply
    85,454.22x = 128,181.64 × 26,289.48
  4. Step 4: Simplify right side
    85,454.22x = 3,369,828,661.15
  5. Step 5: Solve for x
    x = 3,369,828,661.15/85,454.22
  6. Step 6: Final answer
    x = 39,434.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.