Home / 51,442.08-70,974.40-28,778.72

Finding the Fourth Proportional to 51,442.08, 70,974.40 and 28,778.72

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Solution

The fourth proportional to 51,442.08, 70,974.40 and 28,778.72 is: 39,705.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,442.08 : 70,974.40 = 28,778.72 : x
  2. Step 2: Convert to fraction form
    51,442.08/70,974.40 = 28,778.72/x
  3. Step 3: Cross multiply
    51,442.08x = 70,974.40 × 28,778.72
  4. Step 4: Simplify right side
    51,442.08x = 2,042,552,384.77
  5. Step 5: Solve for x
    x = 2,042,552,384.77/51,442.08
  6. Step 6: Final answer
    x = 39,705.87

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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.