Home / 90,506.09-124,881.05-51,756.20

Finding the Fourth Proportional to 90,506.09, 124,881.05 and 51,756.20

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Solution

The fourth proportional to 90,506.09, 124,881.05 and 51,756.20 is: 71,413.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,506.09 : 124,881.05 = 51,756.20 : x
  2. Step 2: Convert to fraction form
    90,506.09/124,881.05 = 51,756.20/x
  3. Step 3: Cross multiply
    90,506.09x = 124,881.05 × 51,756.20
  4. Step 4: Simplify right side
    90,506.09x = 6,463,367,716.82
  5. Step 5: Solve for x
    x = 6,463,367,716.82/90,506.09
  6. Step 6: Final answer
    x = 71,413.63

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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.