Home / 74,938.12-103,413.38-40,945.86

Finding the Fourth Proportional to 74,938.12, 103,413.38 and 40,945.86

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Solution

The fourth proportional to 74,938.12, 103,413.38 and 40,945.86 is: 56,504.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,938.12 : 103,413.38 = 40,945.86 : x
  2. Step 2: Convert to fraction form
    74,938.12/103,413.38 = 40,945.86/x
  3. Step 3: Cross multiply
    74,938.12x = 103,413.38 × 40,945.86
  4. Step 4: Simplify right side
    74,938.12x = 4,234,349,779.61
  5. Step 5: Solve for x
    x = 4,234,349,779.61/74,938.12
  6. Step 6: Final answer
    x = 56,504.62

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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.