Home / 77,057.35-115,575.57-20,901.07

Finding the Fourth Proportional to 77,057.35, 115,575.57 and 20,901.07

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Solution

The fourth proportional to 77,057.35, 115,575.57 and 20,901.07 is: 31,348.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,057.35 : 115,575.57 = 20,901.07 : x
  2. Step 2: Convert to fraction form
    77,057.35/115,575.57 = 20,901.07/x
  3. Step 3: Cross multiply
    77,057.35x = 115,575.57 × 20,901.07
  4. Step 4: Simplify right side
    77,057.35x = 2,415,653,078.86
  5. Step 5: Solve for x
    x = 2,415,653,078.86/77,057.35
  6. Step 6: Final answer
    x = 31,348.77

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1.5x scale

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.