Home / 351,624.85-527,429.99-85,386.76

Finding the Fourth Proportional to 351,624.85, 527,429.99 and 85,386.76

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Solution

The fourth proportional to 351,624.85, 527,429.99 and 85,386.76 is: 128,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,624.85 : 527,429.99 = 85,386.76 : x
  2. Step 2: Convert to fraction form
    351,624.85/527,429.99 = 85,386.76/x
  3. Step 3: Cross multiply
    351,624.85x = 527,429.99 × 85,386.76
  4. Step 4: Simplify right side
    351,624.85x = 45,035,537,972.93
  5. Step 5: Solve for x
    x = 45,035,537,972.93/351,624.85
  6. Step 6: Final answer
    x = 128,078.37

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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.