Home / 85,145.60-117,490.68-49,330.64

Finding the Fourth Proportional to 85,145.60, 117,490.68 and 49,330.64

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Solution

The fourth proportional to 85,145.60, 117,490.68 and 49,330.64 is: 68,070.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,145.60 : 117,490.68 = 49,330.64 : x
  2. Step 2: Convert to fraction form
    85,145.60/117,490.68 = 49,330.64/x
  3. Step 3: Cross multiply
    85,145.60x = 117,490.68 × 49,330.64
  4. Step 4: Simplify right side
    85,145.60x = 5,795,890,438.44
  5. Step 5: Solve for x
    x = 5,795,890,438.44/85,145.60
  6. Step 6: Final answer
    x = 68,070.35

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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.