Home / 78,995.32-118,539.76-29,110.38

Finding the Fourth Proportional to 78,995.32, 118,539.76 and 29,110.38

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Solution

The fourth proportional to 78,995.32, 118,539.76 and 29,110.38 is: 43,682.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,995.32 : 118,539.76 = 29,110.38 : x
  2. Step 2: Convert to fraction form
    78,995.32/118,539.76 = 29,110.38/x
  3. Step 3: Cross multiply
    78,995.32x = 118,539.76 × 29,110.38
  4. Step 4: Simplify right side
    78,995.32x = 3,450,737,458.71
  5. Step 5: Solve for x
    x = 3,450,737,458.71/78,995.32
  6. Step 6: Final answer
    x = 43,682.81

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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.