Home / 76,305.09-114,462.80-28,278.17

Finding the Fourth Proportional to 76,305.09, 114,462.80 and 28,278.17

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Solution

The fourth proportional to 76,305.09, 114,462.80 and 28,278.17 is: 42,419.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,305.09 : 114,462.80 = 28,278.17 : x
  2. Step 2: Convert to fraction form
    76,305.09/114,462.80 = 28,278.17/x
  3. Step 3: Cross multiply
    76,305.09x = 114,462.80 × 28,278.17
  4. Step 4: Simplify right side
    76,305.09x = 3,236,798,517.08
  5. Step 5: Solve for x
    x = 3,236,798,517.08/76,305.09
  6. Step 6: Final answer
    x = 42,419.17

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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.