Home / 78,811.07-118,211.81-25,501.91

Finding the Fourth Proportional to 78,811.07, 118,211.81 and 25,501.91

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Solution

The fourth proportional to 78,811.07, 118,211.81 and 25,501.91 is: 38,251.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,811.07 : 118,211.81 = 25,501.91 : x
  2. Step 2: Convert to fraction form
    78,811.07/118,211.81 = 25,501.91/x
  3. Step 3: Cross multiply
    78,811.07x = 118,211.81 × 25,501.91
  4. Step 4: Simplify right side
    78,811.07x = 3,014,627,107.58
  5. Step 5: Solve for x
    x = 3,014,627,107.58/78,811.07
  6. Step 6: Final answer
    x = 38,251.31

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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.