Home / 74,877.67-111,586.72-72,718.57

Finding the Fourth Proportional to 74,877.67, 111,586.72 and 72,718.57

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Solution

The fourth proportional to 74,877.67, 111,586.72 and 72,718.57 is: 108,369.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,877.67 : 111,586.72 = 72,718.57 : x
  2. Step 2: Convert to fraction form
    74,877.67/111,586.72 = 72,718.57/x
  3. Step 3: Cross multiply
    74,877.67x = 111,586.72 × 72,718.57
  4. Step 4: Simplify right side
    74,877.67x = 8,114,426,709.39
  5. Step 5: Solve for x
    x = 8,114,426,709.39/74,877.67
  6. Step 6: Final answer
    x = 108,369.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.