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Finding the Fourth Proportional to 64,628.01, 96,942.11 and 20,258.28

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Solution

The fourth proportional to 64,628.01, 96,942.11 and 20,258.28 is: 30,387.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,628.01 : 96,942.11 = 20,258.28 : x
  2. Step 2: Convert to fraction form
    64,628.01/96,942.11 = 20,258.28/x
  3. Step 3: Cross multiply
    64,628.01x = 96,942.11 × 20,258.28
  4. Step 4: Simplify right side
    64,628.01x = 1,963,880,306.88
  5. Step 5: Solve for x
    x = 1,963,880,306.88/64,628.01
  6. Step 6: Final answer
    x = 30,387.45

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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.