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Finding the Fourth Proportional to 85,659.39, 128,415.18 and 41,225.01

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Solution

The fourth proportional to 85,659.39, 128,415.18 and 41,225.01 is: 61,801.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,659.39 : 128,415.18 = 41,225.01 : x
  2. Step 2: Convert to fraction form
    85,659.39/128,415.18 = 41,225.01/x
  3. Step 3: Cross multiply
    85,659.39x = 128,415.18 × 41,225.01
  4. Step 4: Simplify right side
    85,659.39x = 5,293,917,079.65
  5. Step 5: Solve for x
    x = 5,293,917,079.65/85,659.39
  6. Step 6: Final answer
    x = 61,801.95

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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.