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Finding the Fourth Proportional to 66,998.52, 92,454.84 and 40,155.84

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Solution

The fourth proportional to 66,998.52, 92,454.84 and 40,155.84 is: 55,413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,998.52 : 92,454.84 = 40,155.84 : x
  2. Step 2: Convert to fraction form
    66,998.52/92,454.84 = 40,155.84/x
  3. Step 3: Cross multiply
    66,998.52x = 92,454.84 × 40,155.84
  4. Step 4: Simplify right side
    66,998.52x = 3,712,601,762.27
  5. Step 5: Solve for x
    x = 3,712,601,762.27/66,998.52
  6. Step 6: Final answer
    x = 55,413.19

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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.