Home / 85,396.56-128,124.50-38,045.26

Finding the Fourth Proportional to 85,396.56, 128,124.50 and 38,045.26

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Solution

The fourth proportional to 85,396.56, 128,124.50 and 38,045.26 is: 57,081.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,396.56 : 128,124.50 = 38,045.26 : x
  2. Step 2: Convert to fraction form
    85,396.56/128,124.50 = 38,045.26/x
  3. Step 3: Cross multiply
    85,396.56x = 128,124.50 × 38,045.26
  4. Step 4: Simplify right side
    85,396.56x = 4,874,529,914.87
  5. Step 5: Solve for x
    x = 4,874,529,914.87/85,396.56
  6. Step 6: Final answer
    x = 57,081.10

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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.