Home / 64,685.84-96,982.08-20,288.72

Finding the Fourth Proportional to 64,685.84, 96,982.08 and 20,288.72

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Solution

The fourth proportional to 64,685.84, 96,982.08 and 20,288.72 is: 30,418.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,685.84 : 96,982.08 = 20,288.72 : x
  2. Step 2: Convert to fraction form
    64,685.84/96,982.08 = 20,288.72/x
  3. Step 3: Cross multiply
    64,685.84x = 96,982.08 × 20,288.72
  4. Step 4: Simplify right side
    64,685.84x = 1,967,642,266.14
  5. Step 5: Solve for x
    x = 1,967,642,266.14/64,685.84
  6. Step 6: Final answer
    x = 30,418.44

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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.