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Finding the Fourth Proportional to 64,710.06, 89,348.52 and 63,676.70

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Solution

The fourth proportional to 64,710.06, 89,348.52 and 63,676.70 is: 87,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,710.06 : 89,348.52 = 63,676.70 : x
  2. Step 2: Convert to fraction form
    64,710.06/89,348.52 = 63,676.70/x
  3. Step 3: Cross multiply
    64,710.06x = 89,348.52 × 63,676.70
  4. Step 4: Simplify right side
    64,710.06x = 5,689,418,903.48
  5. Step 5: Solve for x
    x = 5,689,418,903.48/64,710.06
  6. Step 6: Final answer
    x = 87,921.71

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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.