Home / 90,148.12-124,403.34-49,858.72

Finding the Fourth Proportional to 90,148.12, 124,403.34 and 49,858.72

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Solution

The fourth proportional to 90,148.12, 124,403.34 and 49,858.72 is: 68,804.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,148.12 : 124,403.34 = 49,858.72 : x
  2. Step 2: Convert to fraction form
    90,148.12/124,403.34 = 49,858.72/x
  3. Step 3: Cross multiply
    90,148.12x = 124,403.34 × 49,858.72
  4. Step 4: Simplify right side
    90,148.12x = 6,202,591,296.12
  5. Step 5: Solve for x
    x = 6,202,591,296.12/90,148.12
  6. Step 6: Final answer
    x = 68,804.44

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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.