Home / 78,817.40-118,226.10-49,292.90

Finding the Fourth Proportional to 78,817.40, 118,226.10 and 49,292.90

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Solution

The fourth proportional to 78,817.40, 118,226.10 and 49,292.90 is: 73,939.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,817.40 : 118,226.10 = 49,292.90 : x
  2. Step 2: Convert to fraction form
    78,817.40/118,226.10 = 49,292.90/x
  3. Step 3: Cross multiply
    78,817.40x = 118,226.10 × 49,292.90
  4. Step 4: Simplify right side
    78,817.40x = 5,827,707,324.69
  5. Step 5: Solve for x
    x = 5,827,707,324.69/78,817.40
  6. Step 6: Final answer
    x = 73,939.35

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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.