Home / 76,650.48-105,770.33-56,518.23

Finding the Fourth Proportional to 76,650.48, 105,770.33 and 56,518.23

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Solution

The fourth proportional to 76,650.48, 105,770.33 and 56,518.23 is: 77,989.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,650.48 : 105,770.33 = 56,518.23 : x
  2. Step 2: Convert to fraction form
    76,650.48/105,770.33 = 56,518.23/x
  3. Step 3: Cross multiply
    76,650.48x = 105,770.33 × 56,518.23
  4. Step 4: Simplify right side
    76,650.48x = 5,977,951,838.12
  5. Step 5: Solve for x
    x = 5,977,951,838.12/76,650.48
  6. Step 6: Final answer
    x = 77,989.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.