Home / 51,709.54-77,545.14-18,420.76

Finding the Fourth Proportional to 51,709.54, 77,545.14 and 18,420.76

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Solution

The fourth proportional to 51,709.54, 77,545.14 and 18,420.76 is: 27,624.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,709.54 : 77,545.14 = 18,420.76 : x
  2. Step 2: Convert to fraction form
    51,709.54/77,545.14 = 18,420.76/x
  3. Step 3: Cross multiply
    51,709.54x = 77,545.14 × 18,420.76
  4. Step 4: Simplify right side
    51,709.54x = 1,428,440,413.11
  5. Step 5: Solve for x
    x = 1,428,440,413.11/51,709.54
  6. Step 6: Final answer
    x = 27,624.31

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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.