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Finding the Fourth Proportional to 64,220.40, 96,337.80 and 19,846.80

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Solution

The fourth proportional to 64,220.40, 96,337.80 and 19,846.80 is: 29,772.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,220.40 : 96,337.80 = 19,846.80 : x
  2. Step 2: Convert to fraction form
    64,220.40/96,337.80 = 19,846.80/x
  3. Step 3: Cross multiply
    64,220.40x = 96,337.80 × 19,846.80
  4. Step 4: Simplify right side
    64,220.40x = 1,911,997,049.04
  5. Step 5: Solve for x
    x = 1,911,997,049.04/64,220.40
  6. Step 6: Final answer
    x = 29,772.43

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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.