Home / 82,070.37-123,105.56-19,740.87

Finding the Fourth Proportional to 82,070.37, 123,105.56 and 19,740.87

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Solution

The fourth proportional to 82,070.37, 123,105.56 and 19,740.87 is: 29,611.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,070.37 : 123,105.56 = 19,740.87 : x
  2. Step 2: Convert to fraction form
    82,070.37/123,105.56 = 19,740.87/x
  3. Step 3: Cross multiply
    82,070.37x = 123,105.56 × 19,740.87
  4. Step 4: Simplify right side
    82,070.37x = 2,430,210,757.53
  5. Step 5: Solve for x
    x = 2,430,210,757.53/82,070.37
  6. Step 6: Final answer
    x = 29,611.31

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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.