Home / 80,814.23-121,098.32-38,636.35

Finding the Fourth Proportional to 80,814.23, 121,098.32 and 38,636.35

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Solution

The fourth proportional to 80,814.23, 121,098.32 and 38,636.35 is: 57,895.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,814.23 : 121,098.32 = 38,636.35 : x
  2. Step 2: Convert to fraction form
    80,814.23/121,098.32 = 38,636.35/x
  3. Step 3: Cross multiply
    80,814.23x = 121,098.32 × 38,636.35
  4. Step 4: Simplify right side
    80,814.23x = 4,678,797,075.93
  5. Step 5: Solve for x
    x = 4,678,797,075.93/80,814.23
  6. Step 6: Final answer
    x = 57,895.71

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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.