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Finding the Fourth Proportional to 55,553.76, 76,664.40 and 30,404.64

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Solution

The fourth proportional to 55,553.76, 76,664.40 and 30,404.64 is: 41,958.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,553.76 : 76,664.40 = 30,404.64 : x
  2. Step 2: Convert to fraction form
    55,553.76/76,664.40 = 30,404.64/x
  3. Step 3: Cross multiply
    55,553.76x = 76,664.40 × 30,404.64
  4. Step 4: Simplify right side
    55,553.76x = 2,330,953,482.82
  5. Step 5: Solve for x
    x = 2,330,953,482.82/55,553.76
  6. Step 6: Final answer
    x = 41,958.52

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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.