Home / 85,555.09-128,225.71-41,169.93

Finding the Fourth Proportional to 85,555.09, 128,225.71 and 41,169.93

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Solution

The fourth proportional to 85,555.09, 128,225.71 and 41,169.93 is: 61,703.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,555.09 : 128,225.71 = 41,169.93 : x
  2. Step 2: Convert to fraction form
    85,555.09/128,225.71 = 41,169.93/x
  3. Step 3: Cross multiply
    85,555.09x = 128,225.71 × 41,169.93
  4. Step 4: Simplify right side
    85,555.09x = 5,279,043,504.90
  5. Step 5: Solve for x
    x = 5,279,043,504.90/85,555.09
  6. Step 6: Final answer
    x = 61,703.44

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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.