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Finding the Fourth Proportional to 72,025.70, 99,380.62 and 41,392.89

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Solution

The fourth proportional to 72,025.70, 99,380.62 and 41,392.89 is: 57,113.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,025.70 : 99,380.62 = 41,392.89 : x
  2. Step 2: Convert to fraction form
    72,025.70/99,380.62 = 41,392.89/x
  3. Step 3: Cross multiply
    72,025.70x = 99,380.62 × 41,392.89
  4. Step 4: Simplify right side
    72,025.70x = 4,113,651,071.79
  5. Step 5: Solve for x
    x = 4,113,651,071.79/72,025.70
  6. Step 6: Final answer
    x = 57,113.66

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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.