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Finding the Fourth Proportional to 77,216.10, 115,824.15 and 75,903.90

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Solution

The fourth proportional to 77,216.10, 115,824.15 and 75,903.90 is: 113,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,216.10 : 115,824.15 = 75,903.90 : x
  2. Step 2: Convert to fraction form
    77,216.10/115,824.15 = 75,903.90/x
  3. Step 3: Cross multiply
    77,216.10x = 115,824.15 × 75,903.90
  4. Step 4: Simplify right side
    77,216.10x = 8,791,504,699.19
  5. Step 5: Solve for x
    x = 8,791,504,699.19/77,216.10
  6. Step 6: Final answer
    x = 113,855.85

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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.