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Finding the Fourth Proportional to 64,813.89, 89,443.17 and 35,005.89

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Solution

The fourth proportional to 64,813.89, 89,443.17 and 35,005.89 is: 48,308.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,813.89 : 89,443.17 = 35,005.89 : x
  2. Step 2: Convert to fraction form
    64,813.89/89,443.17 = 35,005.89/x
  3. Step 3: Cross multiply
    64,813.89x = 89,443.17 × 35,005.89
  4. Step 4: Simplify right side
    64,813.89x = 3,131,037,770.27
  5. Step 5: Solve for x
    x = 3,131,037,770.27/64,813.89
  6. Step 6: Final answer
    x = 48,308.13

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1.5x scale

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.