Home / 78,116.34-117,179.97-31,369.23

Finding the Fourth Proportional to 78,116.34, 117,179.97 and 31,369.23

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Solution

The fourth proportional to 78,116.34, 117,179.97 and 31,369.23 is: 47,056.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,116.34 : 117,179.97 = 31,369.23 : x
  2. Step 2: Convert to fraction form
    78,116.34/117,179.97 = 31,369.23/x
  3. Step 3: Cross multiply
    78,116.34x = 117,179.97 × 31,369.23
  4. Step 4: Simplify right side
    78,116.34x = 3,675,845,430.32
  5. Step 5: Solve for x
    x = 3,675,845,430.32/78,116.34
  6. Step 6: Final answer
    x = 47,056.04

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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.