Home / 77,070.24-115,607.74-20,910.12

Finding the Fourth Proportional to 77,070.24, 115,607.74 and 20,910.12

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Solution

The fourth proportional to 77,070.24, 115,607.74 and 20,910.12 is: 31,365.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,070.24 : 115,607.74 = 20,910.12 : x
  2. Step 2: Convert to fraction form
    77,070.24/115,607.74 = 20,910.12/x
  3. Step 3: Cross multiply
    77,070.24x = 115,607.74 × 20,910.12
  4. Step 4: Simplify right side
    77,070.24x = 2,417,371,716.33
  5. Step 5: Solve for x
    x = 2,417,371,716.33/77,070.24
  6. Step 6: Final answer
    x = 31,365.83

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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.