Home / 57,845.85-86,779.05-20,427.63

Finding the Fourth Proportional to 57,845.85, 86,779.05 and 20,427.63

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Solution

The fourth proportional to 57,845.85, 86,779.05 and 20,427.63 is: 30,645.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,845.85 : 86,779.05 = 20,427.63 : x
  2. Step 2: Convert to fraction form
    57,845.85/86,779.05 = 20,427.63/x
  3. Step 3: Cross multiply
    57,845.85x = 86,779.05 × 20,427.63
  4. Step 4: Simplify right side
    57,845.85x = 1,772,690,325.15
  5. Step 5: Solve for x
    x = 1,772,690,325.15/57,845.85
  6. Step 6: Final answer
    x = 30,645.07

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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.