Home / 79,699.21-119,556.15-20,535.10

Finding the Fourth Proportional to 79,699.21, 119,556.15 and 20,535.10

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Solution

The fourth proportional to 79,699.21, 119,556.15 and 20,535.10 is: 30,804.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,699.21 : 119,556.15 = 20,535.10 : x
  2. Step 2: Convert to fraction form
    79,699.21/119,556.15 = 20,535.10/x
  3. Step 3: Cross multiply
    79,699.21x = 119,556.15 × 20,535.10
  4. Step 4: Simplify right side
    79,699.21x = 2,455,097,495.87
  5. Step 5: Solve for x
    x = 2,455,097,495.87/79,699.21
  6. Step 6: Final answer
    x = 30,804.54

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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.