Home / 76,755.28-115,099.98-26,820.40

Finding the Fourth Proportional to 76,755.28, 115,099.98 and 26,820.40

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Solution

The fourth proportional to 76,755.28, 115,099.98 and 26,820.40 is: 40,219.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,755.28 : 115,099.98 = 26,820.40 : x
  2. Step 2: Convert to fraction form
    76,755.28/115,099.98 = 26,820.40/x
  3. Step 3: Cross multiply
    76,755.28x = 115,099.98 × 26,820.40
  4. Step 4: Simplify right side
    76,755.28x = 3,087,027,503.59
  5. Step 5: Solve for x
    x = 3,087,027,503.59/76,755.28
  6. Step 6: Final answer
    x = 40,219.09

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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.