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Finding the Fourth Proportional to 64,881, 89,535.78 and 35,073

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Solution

The fourth proportional to 64,881, 89,535.78 and 35,073 is: 48,400.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,881 : 89,535.78 = 35,073 : x
  2. Step 2: Convert to fraction form
    64,881/89,535.78 = 35,073/x
  3. Step 3: Cross multiply
    64,881x = 89,535.78 × 35,073
  4. Step 4: Simplify right side
    64,881x = 3,140,288,411.94
  5. Step 5: Solve for x
    x = 3,140,288,411.94/64,881
  6. Step 6: Final answer
    x = 48,400.74

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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.