Home / 76,659.40-114,989.10-69,770.35

Finding the Fourth Proportional to 76,659.40, 114,989.10 and 69,770.35

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Solution

The fourth proportional to 76,659.40, 114,989.10 and 69,770.35 is: 104,655.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,659.40 : 114,989.10 = 69,770.35 : x
  2. Step 2: Convert to fraction form
    76,659.40/114,989.10 = 69,770.35/x
  3. Step 3: Cross multiply
    76,659.40x = 114,989.10 × 69,770.35
  4. Step 4: Simplify right side
    76,659.40x = 8,022,829,753.19
  5. Step 5: Solve for x
    x = 8,022,829,753.19/76,659.40
  6. Step 6: Final answer
    x = 104,655.53

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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.