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Finding the Fourth Proportional to 90,413.76, 124,770.76 and 50,126.49

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Solution

The fourth proportional to 90,413.76, 124,770.76 and 50,126.49 is: 69,174.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,413.76 : 124,770.76 = 50,126.49 : x
  2. Step 2: Convert to fraction form
    90,413.76/124,770.76 = 50,126.49/x
  3. Step 3: Cross multiply
    90,413.76x = 124,770.76 × 50,126.49
  4. Step 4: Simplify right side
    90,413.76x = 6,254,319,629.58
  5. Step 5: Solve for x
    x = 6,254,319,629.58/90,413.76
  6. Step 6: Final answer
    x = 69,174.43

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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.