Home / 80,740.36-120,959.88-58,499.38

Finding the Fourth Proportional to 80,740.36, 120,959.88 and 58,499.38

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Solution

The fourth proportional to 80,740.36, 120,959.88 and 58,499.38 is: 87,639.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,740.36 : 120,959.88 = 58,499.38 : x
  2. Step 2: Convert to fraction form
    80,740.36/120,959.88 = 58,499.38/x
  3. Step 3: Cross multiply
    80,740.36x = 120,959.88 × 58,499.38
  4. Step 4: Simplify right side
    80,740.36x = 7,076,077,984.87
  5. Step 5: Solve for x
    x = 7,076,077,984.87/80,740.36
  6. Step 6: Final answer
    x = 87,639.91

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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.