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Finding the Fourth Proportional to 85,330.63, 127,984.67 and 25,357.82

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Solution

The fourth proportional to 85,330.63, 127,984.67 and 25,357.82 is: 38,033.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,330.63 : 127,984.67 = 25,357.82 : x
  2. Step 2: Convert to fraction form
    85,330.63/127,984.67 = 25,357.82/x
  3. Step 3: Cross multiply
    85,330.63x = 127,984.67 × 25,357.82
  4. Step 4: Simplify right side
    85,330.63x = 3,245,412,097.83
  5. Step 5: Solve for x
    x = 3,245,412,097.83/85,330.63
  6. Step 6: Final answer
    x = 38,033.38

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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.