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Finding the Fourth Proportional to 115,762.92, 159,755.76 and 64,773.96

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Solution

The fourth proportional to 115,762.92, 159,755.76 and 64,773.96 is: 89,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,762.92 : 159,755.76 = 64,773.96 : x
  2. Step 2: Convert to fraction form
    115,762.92/159,755.76 = 64,773.96/x
  3. Step 3: Cross multiply
    115,762.92x = 159,755.76 × 64,773.96
  4. Step 4: Simplify right side
    115,762.92x = 10,348,013,208.01
  5. Step 5: Solve for x
    x = 10,348,013,208.01/115,762.92
  6. Step 6: Final answer
    x = 89,389.70

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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.