Home / 81,032.62-121,603.29-28,442.26

Finding the Fourth Proportional to 81,032.62, 121,603.29 and 28,442.26

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Solution

The fourth proportional to 81,032.62, 121,603.29 and 28,442.26 is: 42,682.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,032.62 : 121,603.29 = 28,442.26 : x
  2. Step 2: Convert to fraction form
    81,032.62/121,603.29 = 28,442.26/x
  3. Step 3: Cross multiply
    81,032.62x = 121,603.29 × 28,442.26
  4. Step 4: Simplify right side
    81,032.62x = 3,458,672,391.04
  5. Step 5: Solve for x
    x = 3,458,672,391.04/81,032.62
  6. Step 6: Final answer
    x = 42,682.47

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1.5x scale

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.