Home / 78,480.83-117,605.45-46,426.75

Finding the Fourth Proportional to 78,480.83, 117,605.45 and 46,426.75

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Solution

The fourth proportional to 78,480.83, 117,605.45 and 46,426.75 is: 69,571.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,480.83 : 117,605.45 = 46,426.75 : x
  2. Step 2: Convert to fraction form
    78,480.83/117,605.45 = 46,426.75/x
  3. Step 3: Cross multiply
    78,480.83x = 117,605.45 × 46,426.75
  4. Step 4: Simplify right side
    78,480.83x = 5,460,038,825.79
  5. Step 5: Solve for x
    x = 5,460,038,825.79/78,480.83
  6. Step 6: Final answer
    x = 69,571.62

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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.