Home / 90,089.75-124,323.03-49,804.53

Finding the Fourth Proportional to 90,089.75, 124,323.03 and 49,804.53

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Solution

The fourth proportional to 90,089.75, 124,323.03 and 49,804.53 is: 68,729.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,089.75 : 124,323.03 = 49,804.53 : x
  2. Step 2: Convert to fraction form
    90,089.75/124,323.03 = 49,804.53/x
  3. Step 3: Cross multiply
    90,089.75x = 124,323.03 × 49,804.53
  4. Step 4: Simplify right side
    90,089.75x = 6,191,850,077.33
  5. Step 5: Solve for x
    x = 6,191,850,077.33/90,089.75
  6. Step 6: Final answer
    x = 68,729.80

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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.