Home / 66,718.08-100,067.40-40,415.76

Finding the Fourth Proportional to 66,718.08, 100,067.40 and 40,415.76

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Solution

The fourth proportional to 66,718.08, 100,067.40 and 40,415.76 is: 60,617.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,718.08 : 100,067.40 = 40,415.76 : x
  2. Step 2: Convert to fraction form
    66,718.08/100,067.40 = 40,415.76/x
  3. Step 3: Cross multiply
    66,718.08x = 100,067.40 × 40,415.76
  4. Step 4: Simplify right side
    66,718.08x = 4,044,300,022.22
  5. Step 5: Solve for x
    x = 4,044,300,022.22/66,718.08
  6. Step 6: Final answer
    x = 60,617.75

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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.