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Finding the Fourth Proportional to 45,643.84, 68,461.08 and 12,362.56

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Solution

The fourth proportional to 45,643.84, 68,461.08 and 12,362.56 is: 18,542.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,643.84 : 68,461.08 = 12,362.56 : x
  2. Step 2: Convert to fraction form
    45,643.84/68,461.08 = 12,362.56/x
  3. Step 3: Cross multiply
    45,643.84x = 68,461.08 × 12,362.56
  4. Step 4: Simplify right side
    45,643.84x = 846,354,209.16
  5. Step 5: Solve for x
    x = 846,354,209.16/45,643.84
  6. Step 6: Final answer
    x = 18,542.57

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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.