Home / 42,640.32-58,849.20-30,743.04

Finding the Fourth Proportional to 42,640.32, 58,849.20 and 30,743.04

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Solution

The fourth proportional to 42,640.32, 58,849.20 and 30,743.04 is: 42,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,640.32 : 58,849.20 = 30,743.04 : x
  2. Step 2: Convert to fraction form
    42,640.32/58,849.20 = 30,743.04/x
  3. Step 3: Cross multiply
    42,640.32x = 58,849.20 × 30,743.04
  4. Step 4: Simplify right side
    42,640.32x = 1,809,203,309.57
  5. Step 5: Solve for x
    x = 1,809,203,309.57/42,640.32
  6. Step 6: Final answer
    x = 42,429.40

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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.