Home / 85,171.15-127,709.70-39,529.09

Finding the Fourth Proportional to 85,171.15, 127,709.70 and 39,529.09

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Solution

The fourth proportional to 85,171.15, 127,709.70 and 39,529.09 is: 59,271.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,171.15 : 127,709.70 = 39,529.09 : x
  2. Step 2: Convert to fraction form
    85,171.15/127,709.70 = 39,529.09/x
  3. Step 3: Cross multiply
    85,171.15x = 127,709.70 × 39,529.09
  4. Step 4: Simplify right side
    85,171.15x = 5,048,248,225.17
  5. Step 5: Solve for x
    x = 5,048,248,225.17/85,171.15
  6. Step 6: Final answer
    x = 59,271.81

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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.