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Finding the Fourth Proportional to 56,386.57, 84,579.82 and 52,649.88

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Solution

The fourth proportional to 56,386.57, 84,579.82 and 52,649.88 is: 78,974.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,386.57 : 84,579.82 = 52,649.88 : x
  2. Step 2: Convert to fraction form
    56,386.57/84,579.82 = 52,649.88/x
  3. Step 3: Cross multiply
    56,386.57x = 84,579.82 × 52,649.88
  4. Step 4: Simplify right side
    56,386.57x = 4,453,117,696.54
  5. Step 5: Solve for x
    x = 4,453,117,696.54/56,386.57
  6. Step 6: Final answer
    x = 78,974.79

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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.