Home / 45,146.64-67,730.80-13,981.88

Finding the Fourth Proportional to 45,146.64, 67,730.80 and 13,981.88

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Solution

The fourth proportional to 45,146.64, 67,730.80 and 13,981.88 is: 20,976.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,146.64 : 67,730.80 = 13,981.88 : x
  2. Step 2: Convert to fraction form
    45,146.64/67,730.80 = 13,981.88/x
  3. Step 3: Cross multiply
    45,146.64x = 67,730.80 × 13,981.88
  4. Step 4: Simplify right side
    45,146.64x = 947,003,917.90
  5. Step 5: Solve for x
    x = 947,003,917.90/45,146.64
  6. Step 6: Final answer
    x = 20,976.18

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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.