Home / 83,913.10-115,815.62-48,103.40

Finding the Fourth Proportional to 83,913.10, 115,815.62 and 48,103.40

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Solution

The fourth proportional to 83,913.10, 115,815.62 and 48,103.40 is: 66,391.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,913.10 : 115,815.62 = 48,103.40 : x
  2. Step 2: Convert to fraction form
    83,913.10/115,815.62 = 48,103.40/x
  3. Step 3: Cross multiply
    83,913.10x = 115,815.62 × 48,103.40
  4. Step 4: Simplify right side
    83,913.10x = 5,571,125,095.11
  5. Step 5: Solve for x
    x = 5,571,125,095.11/83,913.10
  6. Step 6: Final answer
    x = 66,391.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.