Home / 85,339.14-128,008.71-23,009.64

Finding the Fourth Proportional to 85,339.14, 128,008.71 and 23,009.64

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Solution

The fourth proportional to 85,339.14, 128,008.71 and 23,009.64 is: 34,514.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,339.14 : 128,008.71 = 23,009.64 : x
  2. Step 2: Convert to fraction form
    85,339.14/128,008.71 = 23,009.64/x
  3. Step 3: Cross multiply
    85,339.14x = 128,008.71 × 23,009.64
  4. Step 4: Simplify right side
    85,339.14x = 2,945,434,333.96
  5. Step 5: Solve for x
    x = 2,945,434,333.96/85,339.14
  6. Step 6: Final answer
    x = 34,514.46

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Similar ratio
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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.