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Finding the Fourth Proportional to 67,632.40, 101,458.20 and 20,880.40

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Solution

The fourth proportional to 67,632.40, 101,458.20 and 20,880.40 is: 31,323.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,632.40 : 101,458.20 = 20,880.40 : x
  2. Step 2: Convert to fraction form
    67,632.40/101,458.20 = 20,880.40/x
  3. Step 3: Cross multiply
    67,632.40x = 101,458.20 × 20,880.40
  4. Step 4: Simplify right side
    67,632.40x = 2,118,487,799.28
  5. Step 5: Solve for x
    x = 2,118,487,799.28/67,632.40
  6. Step 6: Final answer
    x = 31,323.56

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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.