Home / 89,945.12-124,128.42-49,664.60

Finding the Fourth Proportional to 89,945.12, 124,128.42 and 49,664.60

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Solution

The fourth proportional to 89,945.12, 124,128.42 and 49,664.60 is: 68,539.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,945.12 : 124,128.42 = 49,664.60 : x
  2. Step 2: Convert to fraction form
    89,945.12/124,128.42 = 49,664.60/x
  3. Step 3: Cross multiply
    89,945.12x = 124,128.42 × 49,664.60
  4. Step 4: Simplify right side
    89,945.12x = 6,164,788,327.93
  5. Step 5: Solve for x
    x = 6,164,788,327.93/89,945.12
  6. Step 6: Final answer
    x = 68,539.44

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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.