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Finding the Fourth Proportional to 55,549, 76,659.24 and 30,400.12

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Solution

The fourth proportional to 55,549, 76,659.24 and 30,400.12 is: 41,953.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,549 : 76,659.24 = 30,400.12 : x
  2. Step 2: Convert to fraction form
    55,549/76,659.24 = 30,400.12/x
  3. Step 3: Cross multiply
    55,549x = 76,659.24 × 30,400.12
  4. Step 4: Simplify right side
    55,549x = 2,330,450,095.11
  5. Step 5: Solve for x
    x = 2,330,450,095.11/55,549
  6. Step 6: Final answer
    x = 41,953.05

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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.