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Finding the Fourth Proportional to 56,758.62, 78,318.72 and 32,880.90

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Solution

The fourth proportional to 56,758.62, 78,318.72 and 32,880.90 is: 45,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,758.62 : 78,318.72 = 32,880.90 : x
  2. Step 2: Convert to fraction form
    56,758.62/78,318.72 = 32,880.90/x
  3. Step 3: Cross multiply
    56,758.62x = 78,318.72 × 32,880.90
  4. Step 4: Simplify right side
    56,758.62x = 2,575,190,000.45
  5. Step 5: Solve for x
    x = 2,575,190,000.45/56,758.62
  6. Step 6: Final answer
    x = 45,370.91

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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.