Home / 74,501.42-111,050.28-68,522.72

Finding the Fourth Proportional to 74,501.42, 111,050.28 and 68,522.72

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Solution

The fourth proportional to 74,501.42, 111,050.28 and 68,522.72 is: 102,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,501.42 : 111,050.28 = 68,522.72 : x
  2. Step 2: Convert to fraction form
    74,501.42/111,050.28 = 68,522.72/x
  3. Step 3: Cross multiply
    74,501.42x = 111,050.28 × 68,522.72
  4. Step 4: Simplify right side
    74,501.42x = 7,609,466,687.11
  5. Step 5: Solve for x
    x = 7,609,466,687.11/74,501.42
  6. Step 6: Final answer
    x = 102,138.55

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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.