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Finding the Fourth Proportional to 52,396.85, 78,455.04 and 45,701.90

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Solution

The fourth proportional to 52,396.85, 78,455.04 and 45,701.90 is: 68,430.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,396.85 : 78,455.04 = 45,701.90 : x
  2. Step 2: Convert to fraction form
    52,396.85/78,455.04 = 45,701.90/x
  3. Step 3: Cross multiply
    52,396.85x = 78,455.04 × 45,701.90
  4. Step 4: Simplify right side
    52,396.85x = 3,585,544,392.58
  5. Step 5: Solve for x
    x = 3,585,544,392.58/52,396.85
  6. Step 6: Final answer
    x = 68,430.53

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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.