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Finding the Fourth Proportional to 43,300.80, 64,821.60 and 40,737.60

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Solution

The fourth proportional to 43,300.80, 64,821.60 and 40,737.60 is: 60,984.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,300.80 : 64,821.60 = 40,737.60 : x
  2. Step 2: Convert to fraction form
    43,300.80/64,821.60 = 40,737.60/x
  3. Step 3: Cross multiply
    43,300.80x = 64,821.60 × 40,737.60
  4. Step 4: Simplify right side
    43,300.80x = 2,640,676,412.16
  5. Step 5: Solve for x
    x = 2,640,676,412.16/43,300.80
  6. Step 6: Final answer
    x = 60,984.47

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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.