Home / 103,545.45-155,288.10-40,351.47

Finding the Fourth Proportional to 103,545.45, 155,288.10 and 40,351.47

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Solution

The fourth proportional to 103,545.45, 155,288.10 and 40,351.47 is: 60,515.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,545.45 : 155,288.10 = 40,351.47 : x
  2. Step 2: Convert to fraction form
    103,545.45/155,288.10 = 40,351.47/x
  3. Step 3: Cross multiply
    103,545.45x = 155,288.10 × 40,351.47
  4. Step 4: Simplify right side
    103,545.45x = 6,266,103,108.51
  5. Step 5: Solve for x
    x = 6,266,103,108.51/103,545.45
  6. Step 6: Final answer
    x = 60,515.48

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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.