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Finding the Fourth Proportional to 76,232.40, 114,089.40 and 66,901.20

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Solution

The fourth proportional to 76,232.40, 114,089.40 and 66,901.20 is: 100,124.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,232.40 : 114,089.40 = 66,901.20 : x
  2. Step 2: Convert to fraction form
    76,232.40/114,089.40 = 66,901.20/x
  3. Step 3: Cross multiply
    76,232.40x = 114,089.40 × 66,901.20
  4. Step 4: Simplify right side
    76,232.40x = 7,632,717,767.28
  5. Step 5: Solve for x
    x = 7,632,717,767.28/76,232.40
  6. Step 6: Final answer
    x = 100,124.33

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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.