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Finding the Fourth Proportional to 75,369.42, 103,980.19 and 45,156.01

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Solution

The fourth proportional to 75,369.42, 103,980.19 and 45,156.01 is: 62,297.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,369.42 : 103,980.19 = 45,156.01 : x
  2. Step 2: Convert to fraction form
    75,369.42/103,980.19 = 45,156.01/x
  3. Step 3: Cross multiply
    75,369.42x = 103,980.19 × 45,156.01
  4. Step 4: Simplify right side
    75,369.42x = 4,695,330,499.44
  5. Step 5: Solve for x
    x = 4,695,330,499.44/75,369.42
  6. Step 6: Final answer
    x = 62,297.55

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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.