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Finding the Fourth Proportional to 87,652.87, 120,969.45 and 51,854.41

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Solution

The fourth proportional to 87,652.87, 120,969.45 and 51,854.41 is: 71,564.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,652.87 : 120,969.45 = 51,854.41 : x
  2. Step 2: Convert to fraction form
    87,652.87/120,969.45 = 51,854.41/x
  3. Step 3: Cross multiply
    87,652.87x = 120,969.45 × 51,854.41
  4. Step 4: Simplify right side
    87,652.87x = 6,272,799,457.77
  5. Step 5: Solve for x
    x = 6,272,799,457.77/87,652.87
  6. Step 6: Final answer
    x = 71,564.11

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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.