Home / 51,931.15-71,664.90-28,057.75

Finding the Fourth Proportional to 51,931.15, 71,664.90 and 28,057.75

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Solution

The fourth proportional to 51,931.15, 71,664.90 and 28,057.75 is: 38,719.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,931.15 : 71,664.90 = 28,057.75 : x
  2. Step 2: Convert to fraction form
    51,931.15/71,664.90 = 28,057.75/x
  3. Step 3: Cross multiply
    51,931.15x = 71,664.90 × 28,057.75
  4. Step 4: Simplify right side
    51,931.15x = 2,010,755,847.98
  5. Step 5: Solve for x
    x = 2,010,755,847.98/51,931.15
  6. Step 6: Final answer
    x = 38,719.65

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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.