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Finding the Fourth Proportional to 64,658.84, 96,988.17 and 20,289.06

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Solution

The fourth proportional to 64,658.84, 96,988.17 and 20,289.06 is: 30,433.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,658.84 : 96,988.17 = 20,289.06 : x
  2. Step 2: Convert to fraction form
    64,658.84/96,988.17 = 20,289.06/x
  3. Step 3: Cross multiply
    64,658.84x = 96,988.17 × 20,289.06
  4. Step 4: Simplify right side
    64,658.84x = 1,967,798,800.42
  5. Step 5: Solve for x
    x = 1,967,798,800.42/64,658.84
  6. Step 6: Final answer
    x = 30,433.56

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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.