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Finding the Fourth Proportional to 77,636.53, 107,171.67 and 53,471.40

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Solution

The fourth proportional to 77,636.53, 107,171.67 and 53,471.40 is: 73,813.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,636.53 : 107,171.67 = 53,471.40 : x
  2. Step 2: Convert to fraction form
    77,636.53/107,171.67 = 53,471.40/x
  3. Step 3: Cross multiply
    77,636.53x = 107,171.67 × 53,471.40
  4. Step 4: Simplify right side
    77,636.53x = 5,730,619,235.24
  5. Step 5: Solve for x
    x = 5,730,619,235.24/77,636.53
  6. Step 6: Final answer
    x = 73,813.44

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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.