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Finding the Fourth Proportional to 99,064.38, 136,755.90 and 62,783.94

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Solution

The fourth proportional to 99,064.38, 136,755.90 and 62,783.94 is: 86,671.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,064.38 : 136,755.90 = 62,783.94 : x
  2. Step 2: Convert to fraction form
    99,064.38/136,755.90 = 62,783.94/x
  3. Step 3: Cross multiply
    99,064.38x = 136,755.90 × 62,783.94
  4. Step 4: Simplify right side
    99,064.38x = 8,586,074,220.25
  5. Step 5: Solve for x
    x = 8,586,074,220.25/99,064.38
  6. Step 6: Final answer
    x = 86,671.66

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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.