Home / 75,688.47-103,693.68-72,850.86

Finding the Fourth Proportional to 75,688.47, 103,693.68 and 72,850.86

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Solution

The fourth proportional to 75,688.47, 103,693.68 and 72,850.86 is: 99,806.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,688.47 : 103,693.68 = 72,850.86 : x
  2. Step 2: Convert to fraction form
    75,688.47/103,693.68 = 72,850.86/x
  3. Step 3: Cross multiply
    75,688.47x = 103,693.68 × 72,850.86
  4. Step 4: Simplify right side
    75,688.47x = 7,554,173,764.56
  5. Step 5: Solve for x
    x = 7,554,173,764.56/75,688.47
  6. Step 6: Final answer
    x = 99,806.14

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.