Home / 45,731.68-68,590.56-12,453.76

Finding the Fourth Proportional to 45,731.68, 68,590.56 and 12,453.76

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Solution

The fourth proportional to 45,731.68, 68,590.56 and 12,453.76 is: 18,678.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,731.68 : 68,590.56 = 12,453.76 : x
  2. Step 2: Convert to fraction form
    45,731.68/68,590.56 = 12,453.76/x
  3. Step 3: Cross multiply
    45,731.68x = 68,590.56 × 12,453.76
  4. Step 4: Simplify right side
    45,731.68x = 854,210,372.51
  5. Step 5: Solve for x
    x = 854,210,372.51/45,731.68
  6. Step 6: Final answer
    x = 18,678.74

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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.