Home / 72,767.13-100,415.39-40,503.44

Finding the Fourth Proportional to 72,767.13, 100,415.39 and 40,503.44

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Solution

The fourth proportional to 72,767.13, 100,415.39 and 40,503.44 is: 55,892.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,767.13 : 100,415.39 = 40,503.44 : x
  2. Step 2: Convert to fraction form
    72,767.13/100,415.39 = 40,503.44/x
  3. Step 3: Cross multiply
    72,767.13x = 100,415.39 × 40,503.44
  4. Step 4: Simplify right side
    72,767.13x = 4,067,168,019.35
  5. Step 5: Solve for x
    x = 4,067,168,019.35/72,767.13
  6. Step 6: Final answer
    x = 55,892.93

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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.