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Finding the Fourth Proportional to 76,003.54, 104,882.82 and 42,009.64

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Solution

The fourth proportional to 76,003.54, 104,882.82 and 42,009.64 is: 57,972.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,003.54 : 104,882.82 = 42,009.64 : x
  2. Step 2: Convert to fraction form
    76,003.54/104,882.82 = 42,009.64/x
  3. Step 3: Cross multiply
    76,003.54x = 104,882.82 × 42,009.64
  4. Step 4: Simplify right side
    76,003.54x = 4,406,089,510.38
  5. Step 5: Solve for x
    x = 4,406,089,510.38/76,003.54
  6. Step 6: Final answer
    x = 57,972.16

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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.