Home / 78,856.84-118,287.06-26,270.56

Finding the Fourth Proportional to 78,856.84, 118,287.06 and 26,270.56

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Solution

The fourth proportional to 78,856.84, 118,287.06 and 26,270.56 is: 39,406.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,856.84 : 118,287.06 = 26,270.56 : x
  2. Step 2: Convert to fraction form
    78,856.84/118,287.06 = 26,270.56/x
  3. Step 3: Cross multiply
    78,856.84x = 118,287.06 × 26,270.56
  4. Step 4: Simplify right side
    78,856.84x = 3,107,467,306.95
  5. Step 5: Solve for x
    x = 3,107,467,306.95/78,856.84
  6. Step 6: Final answer
    x = 39,406.44

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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.