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Finding the Fourth Proportional to 72,765.98, 109,207.43 and 37,715.66

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Solution

The fourth proportional to 72,765.98, 109,207.43 and 37,715.66 is: 56,603.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,765.98 : 109,207.43 = 37,715.66 : x
  2. Step 2: Convert to fraction form
    72,765.98/109,207.43 = 37,715.66/x
  3. Step 3: Cross multiply
    72,765.98x = 109,207.43 × 37,715.66
  4. Step 4: Simplify right side
    72,765.98x = 4,118,830,110.78
  5. Step 5: Solve for x
    x = 4,118,830,110.78/72,765.98
  6. Step 6: Final answer
    x = 56,603.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.