Home / 76,500.09-114,755.19-20,339.40

Finding the Fourth Proportional to 76,500.09, 114,755.19 and 20,339.40

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Solution

The fourth proportional to 76,500.09, 114,755.19 and 20,339.40 is: 30,510.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,500.09 : 114,755.19 = 20,339.40 : x
  2. Step 2: Convert to fraction form
    76,500.09/114,755.19 = 20,339.40/x
  3. Step 3: Cross multiply
    76,500.09x = 114,755.19 × 20,339.40
  4. Step 4: Simplify right side
    76,500.09x = 2,334,051,711.49
  5. Step 5: Solve for x
    x = 2,334,051,711.49/76,500.09
  6. Step 6: Final answer
    x = 30,510.44

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1.5x scale

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.