Home / 85,448.25-128,168.51-26,281.35

Finding the Fourth Proportional to 85,448.25, 128,168.51 and 26,281.35

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Solution

The fourth proportional to 85,448.25, 128,168.51 and 26,281.35 is: 39,420.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,448.25 : 128,168.51 = 26,281.35 : x
  2. Step 2: Convert to fraction form
    85,448.25/128,168.51 = 26,281.35/x
  3. Step 3: Cross multiply
    85,448.25x = 128,168.51 × 26,281.35
  4. Step 4: Simplify right side
    85,448.25x = 3,368,441,338.88
  5. Step 5: Solve for x
    x = 3,368,441,338.88/85,448.25
  6. Step 6: Final answer
    x = 39,420.83

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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.