Home / 85,939.72-128,884.56-29,777.56

Finding the Fourth Proportional to 85,939.72, 128,884.56 and 29,777.56

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Solution

The fourth proportional to 85,939.72, 128,884.56 and 29,777.56 is: 44,657.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,939.72 : 128,884.56 = 29,777.56 : x
  2. Step 2: Convert to fraction form
    85,939.72/128,884.56 = 29,777.56/x
  3. Step 3: Cross multiply
    85,939.72x = 128,884.56 × 29,777.56
  4. Step 4: Simplify right side
    85,939.72x = 3,837,867,718.47
  5. Step 5: Solve for x
    x = 3,837,867,718.47/85,939.72
  6. Step 6: Final answer
    x = 44,657.67

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1.5x scale

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.