Home / 42,834.39-64,214.63-20,617.17

Finding the Fourth Proportional to 42,834.39, 64,214.63 and 20,617.17

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Solution

The fourth proportional to 42,834.39, 64,214.63 and 20,617.17 is: 30,907.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,834.39 : 64,214.63 = 20,617.17 : x
  2. Step 2: Convert to fraction form
    42,834.39/64,214.63 = 20,617.17/x
  3. Step 3: Cross multiply
    42,834.39x = 64,214.63 × 20,617.17
  4. Step 4: Simplify right side
    42,834.39x = 1,323,923,840.11
  5. Step 5: Solve for x
    x = 1,323,923,840.11/42,834.39
  6. Step 6: Final answer
    x = 30,907.97

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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.