Home / 78,834.10-118,251.15-49,285.30

Finding the Fourth Proportional to 78,834.10, 118,251.15 and 49,285.30

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Solution

The fourth proportional to 78,834.10, 118,251.15 and 49,285.30 is: 73,927.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,834.10 : 118,251.15 = 49,285.30 : x
  2. Step 2: Convert to fraction form
    78,834.10/118,251.15 = 49,285.30/x
  3. Step 3: Cross multiply
    78,834.10x = 118,251.15 × 49,285.30
  4. Step 4: Simplify right side
    78,834.10x = 5,828,043,403.10
  5. Step 5: Solve for x
    x = 5,828,043,403.10/78,834.10
  6. Step 6: Final answer
    x = 73,927.95

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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.