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Finding the Fourth Proportional to 64,795.74, 89,365.26 and 54,407.40

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Solution

The fourth proportional to 64,795.74, 89,365.26 and 54,407.40 is: 75,037.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,795.74 : 89,365.26 = 54,407.40 : x
  2. Step 2: Convert to fraction form
    64,795.74/89,365.26 = 54,407.40/x
  3. Step 3: Cross multiply
    64,795.74x = 89,365.26 × 54,407.40
  4. Step 4: Simplify right side
    64,795.74x = 4,862,131,446.92
  5. Step 5: Solve for x
    x = 4,862,131,446.92/64,795.74
  6. Step 6: Final answer
    x = 75,037.83

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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.