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Finding the Fourth Proportional to 56,754.78, 85,132.32 and 56,672.76

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Solution

The fourth proportional to 56,754.78, 85,132.32 and 56,672.76 is: 85,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,754.78 : 85,132.32 = 56,672.76 : x
  2. Step 2: Convert to fraction form
    56,754.78/85,132.32 = 56,672.76/x
  3. Step 3: Cross multiply
    56,754.78x = 85,132.32 × 56,672.76
  4. Step 4: Simplify right side
    56,754.78x = 4,824,683,646.33
  5. Step 5: Solve for x
    x = 4,824,683,646.33/56,754.78
  6. Step 6: Final answer
    x = 85,009.30

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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.