Home / 75,284.07-103,631.28-65,070.45

Finding the Fourth Proportional to 75,284.07, 103,631.28 and 65,070.45

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Solution

The fourth proportional to 75,284.07, 103,631.28 and 65,070.45 is: 89,571.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,284.07 : 103,631.28 = 65,070.45 : x
  2. Step 2: Convert to fraction form
    75,284.07/103,631.28 = 65,070.45/x
  3. Step 3: Cross multiply
    75,284.07x = 103,631.28 × 65,070.45
  4. Step 4: Simplify right side
    75,284.07x = 6,743,334,023.68
  5. Step 5: Solve for x
    x = 6,743,334,023.68/75,284.07
  6. Step 6: Final answer
    x = 89,571.86

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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.