Home / 77,080.20-115,458.72-48,985.80

Finding the Fourth Proportional to 77,080.20, 115,458.72 and 48,985.80

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Solution

The fourth proportional to 77,080.20, 115,458.72 and 48,985.80 is: 73,376.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,080.20 : 115,458.72 = 48,985.80 : x
  2. Step 2: Convert to fraction form
    77,080.20/115,458.72 = 48,985.80/x
  3. Step 3: Cross multiply
    77,080.20x = 115,458.72 × 48,985.80
  4. Step 4: Simplify right side
    77,080.20x = 5,655,837,766.18
  5. Step 5: Solve for x
    x = 5,655,837,766.18/77,080.20
  6. Step 6: Final answer
    x = 73,376.01

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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.