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Finding the Fourth Proportional to 69,447.89, 95,750.99 and 56,688.11

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Solution

The fourth proportional to 69,447.89, 95,750.99 and 56,688.11 is: 78,158.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,447.89 : 95,750.99 = 56,688.11 : x
  2. Step 2: Convert to fraction form
    69,447.89/95,750.99 = 56,688.11/x
  3. Step 3: Cross multiply
    69,447.89x = 95,750.99 × 56,688.11
  4. Step 4: Simplify right side
    69,447.89x = 5,427,942,370.29
  5. Step 5: Solve for x
    x = 5,427,942,370.29/69,447.89
  6. Step 6: Final answer
    x = 78,158.49

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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.