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Finding the Fourth Proportional to 56,885.48, 85,211.40 and 45,731.96

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Solution

The fourth proportional to 56,885.48, 85,211.40 and 45,731.96 is: 68,504.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,885.48 : 85,211.40 = 45,731.96 : x
  2. Step 2: Convert to fraction form
    56,885.48/85,211.40 = 45,731.96/x
  3. Step 3: Cross multiply
    56,885.48x = 85,211.40 × 45,731.96
  4. Step 4: Simplify right side
    56,885.48x = 3,896,884,336.34
  5. Step 5: Solve for x
    x = 3,896,884,336.34/56,885.48
  6. Step 6: Final answer
    x = 68,504.02

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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.