Home / 76,909.04-115,384.80-32,512.40

Finding the Fourth Proportional to 76,909.04, 115,384.80 and 32,512.40

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Solution

The fourth proportional to 76,909.04, 115,384.80 and 32,512.40 is: 48,777.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,909.04 : 115,384.80 = 32,512.40 : x
  2. Step 2: Convert to fraction form
    76,909.04/115,384.80 = 32,512.40/x
  3. Step 3: Cross multiply
    76,909.04x = 115,384.80 × 32,512.40
  4. Step 4: Simplify right side
    76,909.04x = 3,751,436,771.52
  5. Step 5: Solve for x
    x = 3,751,436,771.52/76,909.04
  6. Step 6: Final answer
    x = 48,777.58

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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.