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Finding the Fourth Proportional to 76,924.76, 115,485.56 and 65,311.76

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Solution

The fourth proportional to 76,924.76, 115,485.56 and 65,311.76 is: 98,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,924.76 : 115,485.56 = 65,311.76 : x
  2. Step 2: Convert to fraction form
    76,924.76/115,485.56 = 65,311.76/x
  3. Step 3: Cross multiply
    76,924.76x = 115,485.56 × 65,311.76
  4. Step 4: Simplify right side
    76,924.76x = 7,542,565,178.19
  5. Step 5: Solve for x
    x = 7,542,565,178.19/76,924.76
  6. Step 6: Final answer
    x = 98,051.20

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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.