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Finding the Fourth Proportional to 51,916.80, 77,894.40 and 49,996.80

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Solution

The fourth proportional to 51,916.80, 77,894.40 and 49,996.80 is: 75,013.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,916.80 : 77,894.40 = 49,996.80 : x
  2. Step 2: Convert to fraction form
    51,916.80/77,894.40 = 49,996.80/x
  3. Step 3: Cross multiply
    51,916.80x = 77,894.40 × 49,996.80
  4. Step 4: Simplify right side
    51,916.80x = 3,894,470,737.92
  5. Step 5: Solve for x
    x = 3,894,470,737.92/51,916.80
  6. Step 6: Final answer
    x = 75,013.69

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1.5x scale

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.