Home / 103,481.48-142,816.28-57,545.70

Finding the Fourth Proportional to 103,481.48, 142,816.28 and 57,545.70

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Solution

The fourth proportional to 103,481.48, 142,816.28 and 57,545.70 is: 79,419.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,481.48 : 142,816.28 = 57,545.70 : x
  2. Step 2: Convert to fraction form
    103,481.48/142,816.28 = 57,545.70/x
  3. Step 3: Cross multiply
    103,481.48x = 142,816.28 × 57,545.70
  4. Step 4: Simplify right side
    103,481.48x = 8,218,462,804.00
  5. Step 5: Solve for x
    x = 8,218,462,804.00/103,481.48
  6. Step 6: Final answer
    x = 79,419.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.