Home / 101,856.45-140,559.78-56,531.77

Finding the Fourth Proportional to 101,856.45, 140,559.78 and 56,531.77

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Solution

The fourth proportional to 101,856.45, 140,559.78 and 56,531.77 is: 78,012.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,856.45 : 140,559.78 = 56,531.77 : x
  2. Step 2: Convert to fraction form
    101,856.45/140,559.78 = 56,531.77/x
  3. Step 3: Cross multiply
    101,856.45x = 140,559.78 × 56,531.77
  4. Step 4: Simplify right side
    101,856.45x = 7,946,093,154.21
  5. Step 5: Solve for x
    x = 7,946,093,154.21/101,856.45
  6. Step 6: Final answer
    x = 78,012.67

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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.