Home / 85,511.34-128,197.86-35,628.98

Finding the Fourth Proportional to 85,511.34, 128,197.86 and 35,628.98

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Solution

The fourth proportional to 85,511.34, 128,197.86 and 35,628.98 is: 53,414.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,511.34 : 128,197.86 = 35,628.98 : x
  2. Step 2: Convert to fraction form
    85,511.34/128,197.86 = 35,628.98/x
  3. Step 3: Cross multiply
    85,511.34x = 128,197.86 × 35,628.98
  4. Step 4: Simplify right side
    85,511.34x = 4,567,558,989.98
  5. Step 5: Solve for x
    x = 4,567,558,989.98/85,511.34
  6. Step 6: Final answer
    x = 53,414.66

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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.