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Finding the Fourth Proportional to 55,210, 76,190.16 and 30,059.68

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Solution

The fourth proportional to 55,210, 76,190.16 and 30,059.68 is: 41,482.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,210 : 76,190.16 = 30,059.68 : x
  2. Step 2: Convert to fraction form
    55,210/76,190.16 = 30,059.68/x
  3. Step 3: Cross multiply
    55,210x = 76,190.16 × 30,059.68
  4. Step 4: Simplify right side
    55,210x = 2,290,251,828.75
  5. Step 5: Solve for x
    x = 2,290,251,828.75/55,210
  6. Step 6: Final answer
    x = 41,482.55

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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.