Home / 42,748.20-64,007.10-30,997.80

Finding the Fourth Proportional to 42,748.20, 64,007.10 and 30,997.80

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Solution

The fourth proportional to 42,748.20, 64,007.10 and 30,997.80 is: 46,413.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,748.20 : 64,007.10 = 30,997.80 : x
  2. Step 2: Convert to fraction form
    42,748.20/64,007.10 = 30,997.80/x
  3. Step 3: Cross multiply
    42,748.20x = 64,007.10 × 30,997.80
  4. Step 4: Simplify right side
    42,748.20x = 1,984,079,284.38
  5. Step 5: Solve for x
    x = 1,984,079,284.38/42,748.20
  6. Step 6: Final answer
    x = 46,413.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.