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Finding the Fourth Proportional to 77,433.81, 106,845.70 and 45,609.05

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Solution

The fourth proportional to 77,433.81, 106,845.70 and 45,609.05 is: 62,932.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,433.81 : 106,845.70 = 45,609.05 : x
  2. Step 2: Convert to fraction form
    77,433.81/106,845.70 = 45,609.05/x
  3. Step 3: Cross multiply
    77,433.81x = 106,845.70 × 45,609.05
  4. Step 4: Simplify right side
    77,433.81x = 4,873,130,873.59
  5. Step 5: Solve for x
    x = 4,873,130,873.59/77,433.81
  6. Step 6: Final answer
    x = 62,932.86

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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.