Home / 77,057.64-115,557.30-30,285

Finding the Fourth Proportional to 77,057.64, 115,557.30 and 30,285

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Solution

The fourth proportional to 77,057.64, 115,557.30 and 30,285 is: 45,416.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,057.64 : 115,557.30 = 30,285 : x
  2. Step 2: Convert to fraction form
    77,057.64/115,557.30 = 30,285/x
  3. Step 3: Cross multiply
    77,057.64x = 115,557.30 × 30,285
  4. Step 4: Simplify right side
    77,057.64x = 3,499,652,830.50
  5. Step 5: Solve for x
    x = 3,499,652,830.50/77,057.64
  6. Step 6: Final answer
    x = 45,416.04

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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.