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Finding the Fourth Proportional to 55,999.65, 77,279.48 and 30,849.15

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Solution

The fourth proportional to 55,999.65, 77,279.48 and 30,849.15 is: 42,571.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,999.65 : 77,279.48 = 30,849.15 : x
  2. Step 2: Convert to fraction form
    55,999.65/77,279.48 = 30,849.15/x
  3. Step 3: Cross multiply
    55,999.65x = 77,279.48 × 30,849.15
  4. Step 4: Simplify right side
    55,999.65x = 2,384,006,279.98
  5. Step 5: Solve for x
    x = 2,384,006,279.98/55,999.65
  6. Step 6: Final answer
    x = 42,571.81

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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.