Home / 73,974.32-102,084.36-42,143.28

Finding the Fourth Proportional to 73,974.32, 102,084.36 and 42,143.28

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Solution

The fourth proportional to 73,974.32, 102,084.36 and 42,143.28 is: 58,157.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,974.32 : 102,084.36 = 42,143.28 : x
  2. Step 2: Convert to fraction form
    73,974.32/102,084.36 = 42,143.28/x
  3. Step 3: Cross multiply
    73,974.32x = 102,084.36 × 42,143.28
  4. Step 4: Simplify right side
    73,974.32x = 4,302,169,767.10
  5. Step 5: Solve for x
    x = 4,302,169,767.10/73,974.32
  6. Step 6: Final answer
    x = 58,157.61

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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.