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Finding the Fourth Proportional to 71,357.70, 107,036.55 and 43,709.70

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Solution

The fourth proportional to 71,357.70, 107,036.55 and 43,709.70 is: 65,564.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,357.70 : 107,036.55 = 43,709.70 : x
  2. Step 2: Convert to fraction form
    71,357.70/107,036.55 = 43,709.70/x
  3. Step 3: Cross multiply
    71,357.70x = 107,036.55 × 43,709.70
  4. Step 4: Simplify right side
    71,357.70x = 4,678,535,489.54
  5. Step 5: Solve for x
    x = 4,678,535,489.54/71,357.70
  6. Step 6: Final answer
    x = 65,564.55

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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.