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Finding the Fourth Proportional to 72,000.43, 108,048.86 and 29,880.55

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Solution

The fourth proportional to 72,000.43, 108,048.86 and 29,880.55 is: 44,840.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,000.43 : 108,048.86 = 29,880.55 : x
  2. Step 2: Convert to fraction form
    72,000.43/108,048.86 = 29,880.55/x
  3. Step 3: Cross multiply
    72,000.43x = 108,048.86 × 29,880.55
  4. Step 4: Simplify right side
    72,000.43x = 3,228,559,363.67
  5. Step 5: Solve for x
    x = 3,228,559,363.67/72,000.43
  6. Step 6: Final answer
    x = 44,840.83

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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.