Home / 78,780.39-118,135.04-22,607.75

Finding the Fourth Proportional to 78,780.39, 118,135.04 and 22,607.75

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Solution

The fourth proportional to 78,780.39, 118,135.04 and 22,607.75 is: 33,901.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,780.39 : 118,135.04 = 22,607.75 : x
  2. Step 2: Convert to fraction form
    78,780.39/118,135.04 = 22,607.75/x
  3. Step 3: Cross multiply
    78,780.39x = 118,135.04 × 22,607.75
  4. Step 4: Simplify right side
    78,780.39x = 2,670,767,427.77
  5. Step 5: Solve for x
    x = 2,670,767,427.77/78,780.39
  6. Step 6: Final answer
    x = 33,901.42

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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.