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Finding the Fourth Proportional to 85,947.60, 128,953.80 and 41,613.60

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Solution

The fourth proportional to 85,947.60, 128,953.80 and 41,613.60 is: 62,436.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,947.60 : 128,953.80 = 41,613.60 : x
  2. Step 2: Convert to fraction form
    85,947.60/128,953.80 = 41,613.60/x
  3. Step 3: Cross multiply
    85,947.60x = 128,953.80 × 41,613.60
  4. Step 4: Simplify right side
    85,947.60x = 5,366,231,851.68
  5. Step 5: Solve for x
    x = 5,366,231,851.68/85,947.60
  6. Step 6: Final answer
    x = 62,436.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.