Home / 77,815.22-116,725.08-30,428.39

Finding the Fourth Proportional to 77,815.22, 116,725.08 and 30,428.39

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Solution

The fourth proportional to 77,815.22, 116,725.08 and 30,428.39 is: 45,643.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,815.22 : 116,725.08 = 30,428.39 : x
  2. Step 2: Convert to fraction form
    77,815.22/116,725.08 = 30,428.39/x
  3. Step 3: Cross multiply
    77,815.22x = 116,725.08 × 30,428.39
  4. Step 4: Simplify right side
    77,815.22x = 3,551,756,257.02
  5. Step 5: Solve for x
    x = 3,551,756,257.02/77,815.22
  6. Step 6: Final answer
    x = 45,643.46

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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.