Home / 77,213.28-115,821.14-30,465.75

Finding the Fourth Proportional to 77,213.28, 115,821.14 and 30,465.75

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Solution

The fourth proportional to 77,213.28, 115,821.14 and 30,465.75 is: 45,699.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,213.28 : 115,821.14 = 30,465.75 : x
  2. Step 2: Convert to fraction form
    77,213.28/115,821.14 = 30,465.75/x
  3. Step 3: Cross multiply
    77,213.28x = 115,821.14 × 30,465.75
  4. Step 4: Simplify right side
    77,213.28x = 3,528,577,895.96
  5. Step 5: Solve for x
    x = 3,528,577,895.96/77,213.28
  6. Step 6: Final answer
    x = 45,699.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.