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Finding the Fourth Proportional to 92,962.50, 128,626.02 and 81,050.64

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Solution

The fourth proportional to 92,962.50, 128,626.02 and 81,050.64 is: 112,144.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,962.50 : 128,626.02 = 81,050.64 : x
  2. Step 2: Convert to fraction form
    92,962.50/128,626.02 = 81,050.64/x
  3. Step 3: Cross multiply
    92,962.50x = 128,626.02 × 81,050.64
  4. Step 4: Simplify right side
    92,962.50x = 10,425,221,241.65
  5. Step 5: Solve for x
    x = 10,425,221,241.65/92,962.50
  6. Step 6: Final answer
    x = 112,144.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.