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Finding the Fourth Proportional to 66,292.65, 91,473.71 and 39,434.67

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Solution

The fourth proportional to 66,292.65, 91,473.71 and 39,434.67 is: 54,413.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,292.65 : 91,473.71 = 39,434.67 : x
  2. Step 2: Convert to fraction form
    66,292.65/91,473.71 = 39,434.67/x
  3. Step 3: Cross multiply
    66,292.65x = 91,473.71 × 39,434.67
  4. Step 4: Simplify right side
    66,292.65x = 3,607,235,370.35
  5. Step 5: Solve for x
    x = 3,607,235,370.35/66,292.65
  6. Step 6: Final answer
    x = 54,413.81

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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.