Home / 103,826.72-155,753.10-40,638.68

Finding the Fourth Proportional to 103,826.72, 155,753.10 and 40,638.68

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Solution

The fourth proportional to 103,826.72, 155,753.10 and 40,638.68 is: 60,963.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,826.72 : 155,753.10 = 40,638.68 : x
  2. Step 2: Convert to fraction form
    103,826.72/155,753.10 = 40,638.68/x
  3. Step 3: Cross multiply
    103,826.72x = 155,753.10 × 40,638.68
  4. Step 4: Simplify right side
    103,826.72x = 6,329,600,389.91
  5. Step 5: Solve for x
    x = 6,329,600,389.91/103,826.72
  6. Step 6: Final answer
    x = 60,963.12

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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.