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Finding the Fourth Proportional to 90,413.65, 124,770.87 and 50,127.91

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Solution

The fourth proportional to 90,413.65, 124,770.87 and 50,127.91 is: 69,176.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,413.65 : 124,770.87 = 50,127.91 : x
  2. Step 2: Convert to fraction form
    90,413.65/124,770.87 = 50,127.91/x
  3. Step 3: Cross multiply
    90,413.65x = 124,770.87 × 50,127.91
  4. Step 4: Simplify right side
    90,413.65x = 6,254,502,941.98
  5. Step 5: Solve for x
    x = 6,254,502,941.98/90,413.65
  6. Step 6: Final answer
    x = 69,176.53

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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.