Home / 85,884.32-118,516.80-51,912.72

Finding the Fourth Proportional to 85,884.32, 118,516.80 and 51,912.72

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Solution

The fourth proportional to 85,884.32, 118,516.80 and 51,912.72 is: 71,637.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,884.32 : 118,516.80 = 51,912.72 : x
  2. Step 2: Convert to fraction form
    85,884.32/118,516.80 = 51,912.72/x
  3. Step 3: Cross multiply
    85,884.32x = 118,516.80 × 51,912.72
  4. Step 4: Simplify right side
    85,884.32x = 6,152,529,453.70
  5. Step 5: Solve for x
    x = 6,152,529,453.70/85,884.32
  6. Step 6: Final answer
    x = 71,637.40

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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.