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Finding the Fourth Proportional to 85,142.16, 117,485.88 and 48,841.71

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Solution

The fourth proportional to 85,142.16, 117,485.88 and 48,841.71 is: 67,395.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,142.16 : 117,485.88 = 48,841.71 : x
  2. Step 2: Convert to fraction form
    85,142.16/117,485.88 = 48,841.71/x
  3. Step 3: Cross multiply
    85,142.16x = 117,485.88 × 48,841.71
  4. Step 4: Simplify right side
    85,142.16x = 5,738,211,280.05
  5. Step 5: Solve for x
    x = 5,738,211,280.05/85,142.16
  6. Step 6: Final answer
    x = 67,395.65

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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.