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Finding the Fourth Proportional to 56,707.56, 78,205.50 and 35,488.80

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Solution

The fourth proportional to 56,707.56, 78,205.50 and 35,488.80 is: 48,942.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,707.56 : 78,205.50 = 35,488.80 : x
  2. Step 2: Convert to fraction form
    56,707.56/78,205.50 = 35,488.80/x
  3. Step 3: Cross multiply
    56,707.56x = 78,205.50 × 35,488.80
  4. Step 4: Simplify right side
    56,707.56x = 2,775,419,348.40
  5. Step 5: Solve for x
    x = 2,775,419,348.40/56,707.56
  6. Step 6: Final answer
    x = 48,942.67

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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.