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Finding the Fourth Proportional to 76,614.40, 114,662.40 and 67,283.20

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Solution

The fourth proportional to 76,614.40, 114,662.40 and 67,283.20 is: 100,697.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,614.40 : 114,662.40 = 67,283.20 : x
  2. Step 2: Convert to fraction form
    76,614.40/114,662.40 = 67,283.20/x
  3. Step 3: Cross multiply
    76,614.40x = 114,662.40 × 67,283.20
  4. Step 4: Simplify right side
    76,614.40x = 7,714,853,191.68
  5. Step 5: Solve for x
    x = 7,714,853,191.68/76,614.40
  6. Step 6: Final answer
    x = 100,697.17

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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.