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Finding the Fourth Proportional to 56,751.60, 84,978.60 and 40,020.96

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Solution

The fourth proportional to 56,751.60, 84,978.60 and 40,020.96 is: 59,926.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,751.60 : 84,978.60 = 40,020.96 : x
  2. Step 2: Convert to fraction form
    56,751.60/84,978.60 = 40,020.96/x
  3. Step 3: Cross multiply
    56,751.60x = 84,978.60 × 40,020.96
  4. Step 4: Simplify right side
    56,751.60x = 3,400,925,151.46
  5. Step 5: Solve for x
    x = 3,400,925,151.46/56,751.60
  6. Step 6: Final answer
    x = 59,926.51

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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.