Home / 77,415.12-116,134.02-27,480.78

Finding the Fourth Proportional to 77,415.12, 116,134.02 and 27,480.78

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Solution

The fourth proportional to 77,415.12, 116,134.02 and 27,480.78 is: 41,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,415.12 : 116,134.02 = 27,480.78 : x
  2. Step 2: Convert to fraction form
    77,415.12/116,134.02 = 27,480.78/x
  3. Step 3: Cross multiply
    77,415.12x = 116,134.02 × 27,480.78
  4. Step 4: Simplify right side
    77,415.12x = 3,191,453,454.14
  5. Step 5: Solve for x
    x = 3,191,453,454.14/77,415.12
  6. Step 6: Final answer
    x = 41,225.20

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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.