Home / 85,700.19-128,586.60-46,211.21

Finding the Fourth Proportional to 85,700.19, 128,586.60 and 46,211.21

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Solution

The fourth proportional to 85,700.19, 128,586.60 and 46,211.21 is: 69,336.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,700.19 : 128,586.60 = 46,211.21 : x
  2. Step 2: Convert to fraction form
    85,700.19/128,586.60 = 46,211.21/x
  3. Step 3: Cross multiply
    85,700.19x = 128,586.60 × 46,211.21
  4. Step 4: Simplify right side
    85,700.19x = 5,942,141,732.85
  5. Step 5: Solve for x
    x = 5,942,141,732.85/85,700.19
  6. Step 6: Final answer
    x = 69,336.39

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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.