Home / 78,484.26-117,723.75-34,111.02

Finding the Fourth Proportional to 78,484.26, 117,723.75 and 34,111.02

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Solution

The fourth proportional to 78,484.26, 117,723.75 and 34,111.02 is: 51,165.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,484.26 : 117,723.75 = 34,111.02 : x
  2. Step 2: Convert to fraction form
    78,484.26/117,723.75 = 34,111.02/x
  3. Step 3: Cross multiply
    78,484.26x = 117,723.75 × 34,111.02
  4. Step 4: Simplify right side
    78,484.26x = 4,015,677,020.17
  5. Step 5: Solve for x
    x = 4,015,677,020.17/78,484.26
  6. Step 6: Final answer
    x = 51,165.38

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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.