Home / 30,681.87-46,078.29-28,212.18

Finding the Fourth Proportional to 30,681.87, 46,078.29 and 28,212.18

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Solution

The fourth proportional to 30,681.87, 46,078.29 and 28,212.18 is: 42,369.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,681.87 : 46,078.29 = 28,212.18 : x
  2. Step 2: Convert to fraction form
    30,681.87/46,078.29 = 28,212.18/x
  3. Step 3: Cross multiply
    30,681.87x = 46,078.29 × 28,212.18
  4. Step 4: Simplify right side
    30,681.87x = 1,299,969,011.57
  5. Step 5: Solve for x
    x = 1,299,969,011.57/30,681.87
  6. Step 6: Final answer
    x = 42,369.29

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1.5x scale

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.