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Finding the Fourth Proportional to 55,632, 76,772.16 and 30,482.08

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Solution

The fourth proportional to 55,632, 76,772.16 and 30,482.08 is: 42,065.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,632 : 76,772.16 = 30,482.08 : x
  2. Step 2: Convert to fraction form
    55,632/76,772.16 = 30,482.08/x
  3. Step 3: Cross multiply
    55,632x = 76,772.16 × 30,482.08
  4. Step 4: Simplify right side
    55,632x = 2,340,175,122.89
  5. Step 5: Solve for x
    x = 2,340,175,122.89/55,632
  6. Step 6: Final answer
    x = 42,065.27

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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.