Home / 102,972.08-154,459.68-40,642

Finding the Fourth Proportional to 102,972.08, 154,459.68 and 40,642

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Solution

The fourth proportional to 102,972.08, 154,459.68 and 40,642 is: 60,963.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,972.08 : 154,459.68 = 40,642 : x
  2. Step 2: Convert to fraction form
    102,972.08/154,459.68 = 40,642/x
  3. Step 3: Cross multiply
    102,972.08x = 154,459.68 × 40,642
  4. Step 4: Simplify right side
    102,972.08x = 6,277,550,314.56
  5. Step 5: Solve for x
    x = 6,277,550,314.56/102,972.08
  6. Step 6: Final answer
    x = 60,963.62

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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.