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Finding the Fourth Proportional to 72,194.58, 99,616.62 and 40,364.64

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Solution

The fourth proportional to 72,194.58, 99,616.62 and 40,364.64 is: 55,696.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,194.58 : 99,616.62 = 40,364.64 : x
  2. Step 2: Convert to fraction form
    72,194.58/99,616.62 = 40,364.64/x
  3. Step 3: Cross multiply
    72,194.58x = 99,616.62 × 40,364.64
  4. Step 4: Simplify right side
    72,194.58x = 4,020,989,004.32
  5. Step 5: Solve for x
    x = 4,020,989,004.32/72,194.58
  6. Step 6: Final answer
    x = 55,696.55

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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.