Home / 76,988.09-115,452.74-36,995.91

Finding the Fourth Proportional to 76,988.09, 115,452.74 and 36,995.91

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Solution

The fourth proportional to 76,988.09, 115,452.74 and 36,995.91 is: 55,479.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,988.09 : 115,452.74 = 36,995.91 : x
  2. Step 2: Convert to fraction form
    76,988.09/115,452.74 = 36,995.91/x
  3. Step 3: Cross multiply
    76,988.09x = 115,452.74 × 36,995.91
  4. Step 4: Simplify right side
    76,988.09x = 4,271,278,837.84
  5. Step 5: Solve for x
    x = 4,271,278,837.84/76,988.09
  6. Step 6: Final answer
    x = 55,479.74

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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.