Home / 78,915.15-118,378.89-26,324.58

Finding the Fourth Proportional to 78,915.15, 118,378.89 and 26,324.58

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Solution

The fourth proportional to 78,915.15, 118,378.89 and 26,324.58 is: 39,488.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,915.15 : 118,378.89 = 26,324.58 : x
  2. Step 2: Convert to fraction form
    78,915.15/118,378.89 = 26,324.58/x
  3. Step 3: Cross multiply
    78,915.15x = 118,378.89 × 26,324.58
  4. Step 4: Simplify right side
    78,915.15x = 3,116,274,560.12
  5. Step 5: Solve for x
    x = 3,116,274,560.12/78,915.15
  6. Step 6: Final answer
    x = 39,488.93

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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.