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Finding the Fourth Proportional to 56,940.90, 85,463.60 and 28,880.48

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Solution

The fourth proportional to 56,940.90, 85,463.60 and 28,880.48 is: 43,347.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,940.90 : 85,463.60 = 28,880.48 : x
  2. Step 2: Convert to fraction form
    56,940.90/85,463.60 = 28,880.48/x
  3. Step 3: Cross multiply
    56,940.90x = 85,463.60 × 28,880.48
  4. Step 4: Simplify right side
    56,940.90x = 2,468,229,790.53
  5. Step 5: Solve for x
    x = 2,468,229,790.53/56,940.90
  6. Step 6: Final answer
    x = 43,347.22

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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.