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Finding the Fourth Proportional to 56,738.76, 85,113.96 and 21,707.88

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Solution

The fourth proportional to 56,738.76, 85,113.96 and 21,707.88 is: 32,564.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,738.76 : 85,113.96 = 21,707.88 : x
  2. Step 2: Convert to fraction form
    56,738.76/85,113.96 = 21,707.88/x
  3. Step 3: Cross multiply
    56,738.76x = 85,113.96 × 21,707.88
  4. Step 4: Simplify right side
    56,738.76x = 1,847,643,630.00
  5. Step 5: Solve for x
    x = 1,847,643,630.00/56,738.76
  6. Step 6: Final answer
    x = 32,564.05

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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.