Home / 78,426.36-117,573.40-34,019.66

Finding the Fourth Proportional to 78,426.36, 117,573.40 and 34,019.66

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Solution

The fourth proportional to 78,426.36, 117,573.40 and 34,019.66 is: 51,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,426.36 : 117,573.40 = 34,019.66 : x
  2. Step 2: Convert to fraction form
    78,426.36/117,573.40 = 34,019.66/x
  3. Step 3: Cross multiply
    78,426.36x = 117,573.40 × 34,019.66
  4. Step 4: Simplify right side
    78,426.36x = 3,999,807,093.04
  5. Step 5: Solve for x
    x = 3,999,807,093.04/78,426.36
  6. Step 6: Final answer
    x = 51,000.80

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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.