Home / 76,400.39-105,420.20-44,129.88

Finding the Fourth Proportional to 76,400.39, 105,420.20 and 44,129.88

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Solution

The fourth proportional to 76,400.39, 105,420.20 and 44,129.88 is: 60,892.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,400.39 : 105,420.20 = 44,129.88 : x
  2. Step 2: Convert to fraction form
    76,400.39/105,420.20 = 44,129.88/x
  3. Step 3: Cross multiply
    76,400.39x = 105,420.20 × 44,129.88
  4. Step 4: Simplify right side
    76,400.39x = 4,652,180,775.58
  5. Step 5: Solve for x
    x = 4,652,180,775.58/76,400.39
  6. Step 6: Final answer
    x = 60,892.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.