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Finding the Fourth Proportional to 77,279.95, 106,650.34 and 43,286.45

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Solution

The fourth proportional to 77,279.95, 106,650.34 and 43,286.45 is: 59,737.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,279.95 : 106,650.34 = 43,286.45 : x
  2. Step 2: Convert to fraction form
    77,279.95/106,650.34 = 43,286.45/x
  3. Step 3: Cross multiply
    77,279.95x = 106,650.34 × 43,286.45
  4. Step 4: Simplify right side
    77,279.95x = 4,616,514,609.89
  5. Step 5: Solve for x
    x = 4,616,514,609.89/77,279.95
  6. Step 6: Final answer
    x = 59,737.55

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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.