Home / 85,394.22-127,919.70-42,570.42

Finding the Fourth Proportional to 85,394.22, 127,919.70 and 42,570.42

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Solution

The fourth proportional to 85,394.22, 127,919.70 and 42,570.42 is: 63,770.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,394.22 : 127,919.70 = 42,570.42 : x
  2. Step 2: Convert to fraction form
    85,394.22/127,919.70 = 42,570.42/x
  3. Step 3: Cross multiply
    85,394.22x = 127,919.70 × 42,570.42
  4. Step 4: Simplify right side
    85,394.22x = 5,445,595,355.27
  5. Step 5: Solve for x
    x = 5,445,595,355.27/85,394.22
  6. Step 6: Final answer
    x = 63,770.07

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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.