Home / 85,308.58-127,920.75-26,129.98

Finding the Fourth Proportional to 85,308.58, 127,920.75 and 26,129.98

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Solution

The fourth proportional to 85,308.58, 127,920.75 and 26,129.98 is: 39,182.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,308.58 : 127,920.75 = 26,129.98 : x
  2. Step 2: Convert to fraction form
    85,308.58/127,920.75 = 26,129.98/x
  3. Step 3: Cross multiply
    85,308.58x = 127,920.75 × 26,129.98
  4. Step 4: Simplify right side
    85,308.58x = 3,342,566,639.09
  5. Step 5: Solve for x
    x = 3,342,566,639.09/85,308.58
  6. Step 6: Final answer
    x = 39,182.07

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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.