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Finding the Fourth Proportional to 52,001.90, 78,002.85 and 43,361.90

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Solution

The fourth proportional to 52,001.90, 78,002.85 and 43,361.90 is: 65,042.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,001.90 : 78,002.85 = 43,361.90 : x
  2. Step 2: Convert to fraction form
    52,001.90/78,002.85 = 43,361.90/x
  3. Step 3: Cross multiply
    52,001.90x = 78,002.85 × 43,361.90
  4. Step 4: Simplify right side
    52,001.90x = 3,382,351,781.42
  5. Step 5: Solve for x
    x = 3,382,351,781.42/52,001.90
  6. Step 6: Final answer
    x = 65,042.85

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1.5x scale

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.