Home / 76,078.20-113,567.55-66,747

Finding the Fourth Proportional to 76,078.20, 113,567.55 and 66,747

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Solution

The fourth proportional to 76,078.20, 113,567.55 and 66,747 is: 99,638.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,078.20 : 113,567.55 = 66,747 : x
  2. Step 2: Convert to fraction form
    76,078.20/113,567.55 = 66,747/x
  3. Step 3: Cross multiply
    76,078.20x = 113,567.55 × 66,747
  4. Step 4: Simplify right side
    76,078.20x = 7,580,293,259.85
  5. Step 5: Solve for x
    x = 7,580,293,259.85/76,078.20
  6. Step 6: Final answer
    x = 99,638.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.