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Finding the Fourth Proportional to 79,938.61, 119,858.71 and 72,360.65

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Solution

The fourth proportional to 79,938.61, 119,858.71 and 72,360.65 is: 108,496.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,938.61 : 119,858.71 = 72,360.65 : x
  2. Step 2: Convert to fraction form
    79,938.61/119,858.71 = 72,360.65/x
  3. Step 3: Cross multiply
    79,938.61x = 119,858.71 × 72,360.65
  4. Step 4: Simplify right side
    79,938.61x = 8,673,054,332.34
  5. Step 5: Solve for x
    x = 8,673,054,332.34/79,938.61
  6. Step 6: Final answer
    x = 108,496.44

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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.