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Finding the Fourth Proportional to 85,504.80, 117,962.12 and 56,838.32

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Solution

The fourth proportional to 85,504.80, 117,962.12 and 56,838.32 is: 78,413.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,504.80 : 117,962.12 = 56,838.32 : x
  2. Step 2: Convert to fraction form
    85,504.80/117,962.12 = 56,838.32/x
  3. Step 3: Cross multiply
    85,504.80x = 117,962.12 × 56,838.32
  4. Step 4: Simplify right side
    85,504.80x = 6,704,768,724.44
  5. Step 5: Solve for x
    x = 6,704,768,724.44/85,504.80
  6. Step 6: Final answer
    x = 78,413.95

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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.