Home / 65,628.72-90,377.03-57,010.95

Finding the Fourth Proportional to 65,628.72, 90,377.03 and 57,010.95

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Solution

The fourth proportional to 65,628.72, 90,377.03 and 57,010.95 is: 78,509.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,628.72 : 90,377.03 = 57,010.95 : x
  2. Step 2: Convert to fraction form
    65,628.72/90,377.03 = 57,010.95/x
  3. Step 3: Cross multiply
    65,628.72x = 90,377.03 × 57,010.95
  4. Step 4: Simplify right side
    65,628.72x = 5,152,480,481.01
  5. Step 5: Solve for x
    x = 5,152,480,481.01/65,628.72
  6. Step 6: Final answer
    x = 78,509.54

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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.