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Finding the Fourth Proportional to 72,599.63, 100,187.49 and 40,768.55

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Solution

The fourth proportional to 72,599.63, 100,187.49 and 40,768.55 is: 56,260.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,599.63 : 100,187.49 = 40,768.55 : x
  2. Step 2: Convert to fraction form
    72,599.63/100,187.49 = 40,768.55/x
  3. Step 3: Cross multiply
    72,599.63x = 100,187.49 × 40,768.55
  4. Step 4: Simplify right side
    72,599.63x = 4,084,498,194.50
  5. Step 5: Solve for x
    x = 4,084,498,194.50/72,599.63
  6. Step 6: Final answer
    x = 56,260.60

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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.