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Finding the Fourth Proportional to 72,598.88, 100,186.46 and 40,767.80

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Solution

The fourth proportional to 72,598.88, 100,186.46 and 40,767.80 is: 56,259.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,598.88 : 100,186.46 = 40,767.80 : x
  2. Step 2: Convert to fraction form
    72,598.88/100,186.46 = 40,767.80/x
  3. Step 3: Cross multiply
    72,598.88x = 100,186.46 × 40,767.80
  4. Step 4: Simplify right side
    72,598.88x = 4,084,380,859.22
  5. Step 5: Solve for x
    x = 4,084,380,859.22/72,598.88
  6. Step 6: Final answer
    x = 56,259.56

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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.