Home / 77,380.45-116,103.51-42,279.10

Finding the Fourth Proportional to 77,380.45, 116,103.51 and 42,279.10

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Solution

The fourth proportional to 77,380.45, 116,103.51 and 42,279.10 is: 63,436.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,380.45 : 116,103.51 = 42,279.10 : x
  2. Step 2: Convert to fraction form
    77,380.45/116,103.51 = 42,279.10/x
  3. Step 3: Cross multiply
    77,380.45x = 116,103.51 × 42,279.10
  4. Step 4: Simplify right side
    77,380.45x = 4,908,751,619.38
  5. Step 5: Solve for x
    x = 4,908,751,619.38/77,380.45
  6. Step 6: Final answer
    x = 63,436.59

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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.