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Finding the Fourth Proportional to 62,428.62, 93,649.32 and 20,307

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Solution

The fourth proportional to 62,428.62, 93,649.32 and 20,307 is: 30,462.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,428.62 : 93,649.32 = 20,307 : x
  2. Step 2: Convert to fraction form
    62,428.62/93,649.32 = 20,307/x
  3. Step 3: Cross multiply
    62,428.62x = 93,649.32 × 20,307
  4. Step 4: Simplify right side
    62,428.62x = 1,901,736,741.24
  5. Step 5: Solve for x
    x = 1,901,736,741.24/62,428.62
  6. Step 6: Final answer
    x = 30,462.58

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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.