Home / 77,055.18-115,606.38-69,107.46

Finding the Fourth Proportional to 77,055.18, 115,606.38 and 69,107.46

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Solution

The fourth proportional to 77,055.18, 115,606.38 and 69,107.46 is: 103,682.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,055.18 : 115,606.38 = 69,107.46 : x
  2. Step 2: Convert to fraction form
    77,055.18/115,606.38 = 69,107.46/x
  3. Step 3: Cross multiply
    77,055.18x = 115,606.38 × 69,107.46
  4. Step 4: Simplify right side
    77,055.18x = 7,989,263,281.59
  5. Step 5: Solve for x
    x = 7,989,263,281.59/77,055.18
  6. Step 6: Final answer
    x = 103,682.36

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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.