Home / 85,779.90-128,697.39-26,627.22

Finding the Fourth Proportional to 85,779.90, 128,697.39 and 26,627.22

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Solution

The fourth proportional to 85,779.90, 128,697.39 and 26,627.22 is: 39,949.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,779.90 : 128,697.39 = 26,627.22 : x
  2. Step 2: Convert to fraction form
    85,779.90/128,697.39 = 26,627.22/x
  3. Step 3: Cross multiply
    85,779.90x = 128,697.39 × 26,627.22
  4. Step 4: Simplify right side
    85,779.90x = 3,426,853,716.96
  5. Step 5: Solve for x
    x = 3,426,853,716.96/85,779.90
  6. Step 6: Final answer
    x = 39,949.38

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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.