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Finding the Fourth Proportional to 56,759.62, 78,320.10 and 32,881.90

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Solution

The fourth proportional to 56,759.62, 78,320.10 and 32,881.90 is: 45,372.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,759.62 : 78,320.10 = 32,881.90 : x
  2. Step 2: Convert to fraction form
    56,759.62/78,320.10 = 32,881.90/x
  3. Step 3: Cross multiply
    56,759.62x = 78,320.10 × 32,881.90
  4. Step 4: Simplify right side
    56,759.62x = 2,575,313,696.19
  5. Step 5: Solve for x
    x = 2,575,313,696.19/56,759.62
  6. Step 6: Final answer
    x = 45,372.29

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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.