Home / 77,999.84-117,022.44-28,079.04

Finding the Fourth Proportional to 77,999.84, 117,022.44 and 28,079.04

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Solution

The fourth proportional to 77,999.84, 117,022.44 and 28,079.04 is: 42,126.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,999.84 : 117,022.44 = 28,079.04 : x
  2. Step 2: Convert to fraction form
    77,999.84/117,022.44 = 28,079.04/x
  3. Step 3: Cross multiply
    77,999.84x = 117,022.44 × 28,079.04
  4. Step 4: Simplify right side
    77,999.84x = 3,285,877,773.66
  5. Step 5: Solve for x
    x = 3,285,877,773.66/77,999.84
  6. Step 6: Final answer
    x = 42,126.72

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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.