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Finding the Fourth Proportional to 57,999.76, 80,020.40 and 40,088.32

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Solution

The fourth proportional to 57,999.76, 80,020.40 and 40,088.32 is: 55,308.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,999.76 : 80,020.40 = 40,088.32 : x
  2. Step 2: Convert to fraction form
    57,999.76/80,020.40 = 40,088.32/x
  3. Step 3: Cross multiply
    57,999.76x = 80,020.40 × 40,088.32
  4. Step 4: Simplify right side
    57,999.76x = 3,207,883,401.73
  5. Step 5: Solve for x
    x = 3,207,883,401.73/57,999.76
  6. Step 6: Final answer
    x = 55,308.56

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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.