Home / 76,838.20-106,044.78-57,945.40

Finding the Fourth Proportional to 76,838.20, 106,044.78 and 57,945.40

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Solution

The fourth proportional to 76,838.20, 106,044.78 and 57,945.40 is: 79,970.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,838.20 : 106,044.78 = 57,945.40 : x
  2. Step 2: Convert to fraction form
    76,838.20/106,044.78 = 57,945.40/x
  3. Step 3: Cross multiply
    76,838.20x = 106,044.78 × 57,945.40
  4. Step 4: Simplify right side
    76,838.20x = 6,144,807,195.01
  5. Step 5: Solve for x
    x = 6,144,807,195.01/76,838.20
  6. Step 6: Final answer
    x = 79,970.73

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1.5x scale

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.