Home / 85,513.76-128,287.44-26,339.36

Finding the Fourth Proportional to 85,513.76, 128,287.44 and 26,339.36

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Solution

The fourth proportional to 85,513.76, 128,287.44 and 26,339.36 is: 39,514.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,513.76 : 128,287.44 = 26,339.36 : x
  2. Step 2: Convert to fraction form
    85,513.76/128,287.44 = 26,339.36/x
  3. Step 3: Cross multiply
    85,513.76x = 128,287.44 × 26,339.36
  4. Step 4: Simplify right side
    85,513.76x = 3,379,009,065.64
  5. Step 5: Solve for x
    x = 3,379,009,065.64/85,513.76
  6. Step 6: Final answer
    x = 39,514.21

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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.