Home / 77,178.15-115,909.79-46,203.75

Finding the Fourth Proportional to 77,178.15, 115,909.79 and 46,203.75

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Solution

The fourth proportional to 77,178.15, 115,909.79 and 46,203.75 is: 69,390.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,178.15 : 115,909.79 = 46,203.75 : x
  2. Step 2: Convert to fraction form
    77,178.15/115,909.79 = 46,203.75/x
  3. Step 3: Cross multiply
    77,178.15x = 115,909.79 × 46,203.75
  4. Step 4: Simplify right side
    77,178.15x = 5,355,466,728.69
  5. Step 5: Solve for x
    x = 5,355,466,728.69/77,178.15
  6. Step 6: Final answer
    x = 69,390.97

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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.