Home / 78,838.20-118,264.86-26,251.38

Finding the Fourth Proportional to 78,838.20, 118,264.86 and 26,251.38

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Solution

The fourth proportional to 78,838.20, 118,264.86 and 26,251.38 is: 39,379.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,838.20 : 118,264.86 = 26,251.38 : x
  2. Step 2: Convert to fraction form
    78,838.20/118,264.86 = 26,251.38/x
  3. Step 3: Cross multiply
    78,838.20x = 118,264.86 × 26,251.38
  4. Step 4: Simplify right side
    78,838.20x = 3,104,615,780.51
  5. Step 5: Solve for x
    x = 3,104,615,780.51/78,838.20
  6. Step 6: Final answer
    x = 39,379.59

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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.