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Finding the Fourth Proportional to 75,000.40, 103,459.60 and 48,112.96

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Solution

The fourth proportional to 75,000.40, 103,459.60 and 48,112.96 is: 66,369.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,000.40 : 103,459.60 = 48,112.96 : x
  2. Step 2: Convert to fraction form
    75,000.40/103,459.60 = 48,112.96/x
  3. Step 3: Cross multiply
    75,000.40x = 103,459.60 × 48,112.96
  4. Step 4: Simplify right side
    75,000.40x = 4,977,747,596.42
  5. Step 5: Solve for x
    x = 4,977,747,596.42/75,000.40
  6. Step 6: Final answer
    x = 66,369.61

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1.5x scale

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.