Home / 51,657.85-71,305.77-30,435.75

Finding the Fourth Proportional to 51,657.85, 71,305.77 and 30,435.75

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Solution

The fourth proportional to 51,657.85, 71,305.77 and 30,435.75 is: 42,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,657.85 : 71,305.77 = 30,435.75 : x
  2. Step 2: Convert to fraction form
    51,657.85/71,305.77 = 30,435.75/x
  3. Step 3: Cross multiply
    51,657.85x = 71,305.77 × 30,435.75
  4. Step 4: Simplify right side
    51,657.85x = 2,170,244,532.21
  5. Step 5: Solve for x
    x = 2,170,244,532.21/51,657.85
  6. Step 6: Final answer
    x = 42,011.90

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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.