Home / 78,555.03-117,838.01-26,001.42

Finding the Fourth Proportional to 78,555.03, 117,838.01 and 26,001.42

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Solution

The fourth proportional to 78,555.03, 117,838.01 and 26,001.42 is: 39,003.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,555.03 : 117,838.01 = 26,001.42 : x
  2. Step 2: Convert to fraction form
    78,555.03/117,838.01 = 26,001.42/x
  3. Step 3: Cross multiply
    78,555.03x = 117,838.01 × 26,001.42
  4. Step 4: Simplify right side
    78,555.03x = 3,063,955,459.97
  5. Step 5: Solve for x
    x = 3,063,955,459.97/78,555.03
  6. Step 6: Final answer
    x = 39,003.94

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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.