Home / 78,914.05-118,381.78-25,588.63

Finding the Fourth Proportional to 78,914.05, 118,381.78 and 25,588.63

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Solution

The fourth proportional to 78,914.05, 118,381.78 and 25,588.63 is: 38,386.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,914.05 : 118,381.78 = 25,588.63 : x
  2. Step 2: Convert to fraction form
    78,914.05/118,381.78 = 25,588.63/x
  3. Step 3: Cross multiply
    78,914.05x = 118,381.78 × 25,588.63
  4. Step 4: Simplify right side
    78,914.05x = 3,029,227,747.12
  5. Step 5: Solve for x
    x = 3,029,227,747.12/78,914.05
  6. Step 6: Final answer
    x = 38,386.42

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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.