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Finding the Fourth Proportional to 45,117.32, 67,682.46 and 13,955

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Solution

The fourth proportional to 45,117.32, 67,682.46 and 13,955 is: 20,934.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,117.32 : 67,682.46 = 13,955 : x
  2. Step 2: Convert to fraction form
    45,117.32/67,682.46 = 13,955/x
  3. Step 3: Cross multiply
    45,117.32x = 67,682.46 × 13,955
  4. Step 4: Simplify right side
    45,117.32x = 944,508,729.30
  5. Step 5: Solve for x
    x = 944,508,729.30/45,117.32
  6. Step 6: Final answer
    x = 20,934.50

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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.