Home / 75,285.07-103,632.66-65,071.45

Finding the Fourth Proportional to 75,285.07, 103,632.66 and 65,071.45

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Solution

The fourth proportional to 75,285.07, 103,632.66 and 65,071.45 is: 89,573.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,285.07 : 103,632.66 = 65,071.45 : x
  2. Step 2: Convert to fraction form
    75,285.07/103,632.66 = 65,071.45/x
  3. Step 3: Cross multiply
    75,285.07x = 103,632.66 × 65,071.45
  4. Step 4: Simplify right side
    75,285.07x = 6,743,527,453.56
  5. Step 5: Solve for x
    x = 6,743,527,453.56/75,285.07
  6. Step 6: Final answer
    x = 89,573.24

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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.