Home / 85,779.50-128,668.29-35,167.23

Finding the Fourth Proportional to 85,779.50, 128,668.29 and 35,167.23

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Solution

The fourth proportional to 85,779.50, 128,668.29 and 35,167.23 is: 52,750.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,779.50 : 128,668.29 = 35,167.23 : x
  2. Step 2: Convert to fraction form
    85,779.50/128,668.29 = 35,167.23/x
  3. Step 3: Cross multiply
    85,779.50x = 128,668.29 × 35,167.23
  4. Step 4: Simplify right side
    85,779.50x = 4,524,907,348.14
  5. Step 5: Solve for x
    x = 4,524,907,348.14/85,779.50
  6. Step 6: Final answer
    x = 52,750.45

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Double scale
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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.