Home / 74,870.15-103,321.16-40,879.32

Finding the Fourth Proportional to 74,870.15, 103,321.16 and 40,879.32

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Solution

The fourth proportional to 74,870.15, 103,321.16 and 40,879.32 is: 56,413.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,870.15 : 103,321.16 = 40,879.32 : x
  2. Step 2: Convert to fraction form
    74,870.15/103,321.16 = 40,879.32/x
  3. Step 3: Cross multiply
    74,870.15x = 103,321.16 × 40,879.32
  4. Step 4: Simplify right side
    74,870.15x = 4,223,698,558.01
  5. Step 5: Solve for x
    x = 4,223,698,558.01/74,870.15
  6. Step 6: Final answer
    x = 56,413.66

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1.5x scale

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.