Home / 85,628.75-118,215.15-51,645.84

Finding the Fourth Proportional to 85,628.75, 118,215.15 and 51,645.84

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Solution

The fourth proportional to 85,628.75, 118,215.15 and 51,645.84 is: 71,299.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,628.75 : 118,215.15 = 51,645.84 : x
  2. Step 2: Convert to fraction form
    85,628.75/118,215.15 = 51,645.84/x
  3. Step 3: Cross multiply
    85,628.75x = 118,215.15 × 51,645.84
  4. Step 4: Simplify right side
    85,628.75x = 6,105,320,085.50
  5. Step 5: Solve for x
    x = 6,105,320,085.50/85,628.75
  6. Step 6: Final answer
    x = 71,299.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.