Home / 76,723.10-115,075.28-20,567.42

Finding the Fourth Proportional to 76,723.10, 115,075.28 and 20,567.42

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Solution

The fourth proportional to 76,723.10, 115,075.28 and 20,567.42 is: 30,848.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,723.10 : 115,075.28 = 20,567.42 : x
  2. Step 2: Convert to fraction form
    76,723.10/115,075.28 = 20,567.42/x
  3. Step 3: Cross multiply
    76,723.10x = 115,075.28 × 20,567.42
  4. Step 4: Simplify right side
    76,723.10x = 2,366,801,615.38
  5. Step 5: Solve for x
    x = 2,366,801,615.38/76,723.10
  6. Step 6: Final answer
    x = 30,848.62

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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.