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Finding the Fourth Proportional to 90,891.89, 136,365.68 and 46,549.79

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Solution

The fourth proportional to 90,891.89, 136,365.68 and 46,549.79 is: 69,838.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,891.89 : 136,365.68 = 46,549.79 : x
  2. Step 2: Convert to fraction form
    90,891.89/136,365.68 = 46,549.79/x
  3. Step 3: Cross multiply
    90,891.89x = 136,365.68 × 46,549.79
  4. Step 4: Simplify right side
    90,891.89x = 6,347,794,224.50
  5. Step 5: Solve for x
    x = 6,347,794,224.50/90,891.89
  6. Step 6: Final answer
    x = 69,838.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.