Home / 78,939.85-118,387.45-22,000.70

Finding the Fourth Proportional to 78,939.85, 118,387.45 and 22,000.70

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Solution

The fourth proportional to 78,939.85, 118,387.45 and 22,000.70 is: 32,994.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,939.85 : 118,387.45 = 22,000.70 : x
  2. Step 2: Convert to fraction form
    78,939.85/118,387.45 = 22,000.70/x
  3. Step 3: Cross multiply
    78,939.85x = 118,387.45 × 22,000.70
  4. Step 4: Simplify right side
    78,939.85x = 2,604,606,771.22
  5. Step 5: Solve for x
    x = 2,604,606,771.22/78,939.85
  6. Step 6: Final answer
    x = 32,994.83

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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.