Home / 85,309.20-127,779.12-61,884

Finding the Fourth Proportional to 85,309.20, 127,779.12 and 61,884

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Solution

The fourth proportional to 85,309.20, 127,779.12 and 61,884 is: 92,692.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,309.20 : 127,779.12 = 61,884 : x
  2. Step 2: Convert to fraction form
    85,309.20/127,779.12 = 61,884/x
  3. Step 3: Cross multiply
    85,309.20x = 127,779.12 × 61,884
  4. Step 4: Simplify right side
    85,309.20x = 7,907,483,062.08
  5. Step 5: Solve for x
    x = 7,907,483,062.08/85,309.20
  6. Step 6: Final answer
    x = 92,692.03

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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.