Home / 83,139.72-114,732.36-45,413.70

Finding the Fourth Proportional to 83,139.72, 114,732.36 and 45,413.70

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Solution

The fourth proportional to 83,139.72, 114,732.36 and 45,413.70 is: 62,670.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,139.72 : 114,732.36 = 45,413.70 : x
  2. Step 2: Convert to fraction form
    83,139.72/114,732.36 = 45,413.70/x
  3. Step 3: Cross multiply
    83,139.72x = 114,732.36 × 45,413.70
  4. Step 4: Simplify right side
    83,139.72x = 5,210,420,977.33
  5. Step 5: Solve for x
    x = 5,210,420,977.33/83,139.72
  6. Step 6: Final answer
    x = 62,670.66

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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.