Home / 42,748.70-64,007.85-30,998.30

Finding the Fourth Proportional to 42,748.70, 64,007.85 and 30,998.30

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Solution

The fourth proportional to 42,748.70, 64,007.85 and 30,998.30 is: 46,413.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,748.70 : 64,007.85 = 30,998.30 : x
  2. Step 2: Convert to fraction form
    42,748.70/64,007.85 = 30,998.30/x
  3. Step 3: Cross multiply
    42,748.70x = 64,007.85 × 30,998.30
  4. Step 4: Simplify right side
    42,748.70x = 1,984,134,536.66
  5. Step 5: Solve for x
    x = 1,984,134,536.66/42,748.70
  6. Step 6: Final answer
    x = 46,413.92

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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.