Home / 77,813.84-116,437.26-67,405.34

Finding the Fourth Proportional to 77,813.84, 116,437.26 and 67,405.34

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Solution

The fourth proportional to 77,813.84, 116,437.26 and 67,405.34 is: 100,862.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,813.84 : 116,437.26 = 67,405.34 : x
  2. Step 2: Convert to fraction form
    77,813.84/116,437.26 = 67,405.34/x
  3. Step 3: Cross multiply
    77,813.84x = 116,437.26 × 67,405.34
  4. Step 4: Simplify right side
    77,813.84x = 7,848,493,098.97
  5. Step 5: Solve for x
    x = 7,848,493,098.97/77,813.84
  6. Step 6: Final answer
    x = 100,862.43

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1.5x scale

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.