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Finding the Fourth Proportional to 45,653.46, 68,479.02 and 20,675.40

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Solution

The fourth proportional to 45,653.46, 68,479.02 and 20,675.40 is: 31,012.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,653.46 : 68,479.02 = 20,675.40 : x
  2. Step 2: Convert to fraction form
    45,653.46/68,479.02 = 20,675.40/x
  3. Step 3: Cross multiply
    45,653.46x = 68,479.02 × 20,675.40
  4. Step 4: Simplify right side
    45,653.46x = 1,415,831,130.11
  5. Step 5: Solve for x
    x = 1,415,831,130.11/45,653.46
  6. Step 6: Final answer
    x = 31,012.57

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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.