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Finding the Fourth Proportional to 64,611.40, 96,698.40 and 56,738.20

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Solution

The fourth proportional to 64,611.40, 96,698.40 and 56,738.20 is: 84,915.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,611.40 : 96,698.40 = 56,738.20 : x
  2. Step 2: Convert to fraction form
    64,611.40/96,698.40 = 56,738.20/x
  3. Step 3: Cross multiply
    64,611.40x = 96,698.40 × 56,738.20
  4. Step 4: Simplify right side
    64,611.40x = 5,486,493,158.88
  5. Step 5: Solve for x
    x = 5,486,493,158.88/64,611.40
  6. Step 6: Final answer
    x = 84,915.25

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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.