Home / 78,821.10-118,231.65-49,329.90

Finding the Fourth Proportional to 78,821.10, 118,231.65 and 49,329.90

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Solution

The fourth proportional to 78,821.10, 118,231.65 and 49,329.90 is: 73,994.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,821.10 : 118,231.65 = 49,329.90 : x
  2. Step 2: Convert to fraction form
    78,821.10/118,231.65 = 49,329.90/x
  3. Step 3: Cross multiply
    78,821.10x = 118,231.65 × 49,329.90
  4. Step 4: Simplify right side
    78,821.10x = 5,832,355,471.34
  5. Step 5: Solve for x
    x = 5,832,355,471.34/78,821.10
  6. Step 6: Final answer
    x = 73,994.85

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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.