Home / 102,621.78-141,579.09-62,320.32

Finding the Fourth Proportional to 102,621.78, 141,579.09 and 62,320.32

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Solution

The fourth proportional to 102,621.78, 141,579.09 and 62,320.32 is: 85,978.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,621.78 : 141,579.09 = 62,320.32 : x
  2. Step 2: Convert to fraction form
    102,621.78/141,579.09 = 62,320.32/x
  3. Step 3: Cross multiply
    102,621.78x = 141,579.09 × 62,320.32
  4. Step 4: Simplify right side
    102,621.78x = 8,823,254,194.11
  5. Step 5: Solve for x
    x = 8,823,254,194.11/102,621.78
  6. Step 6: Final answer
    x = 85,978.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.