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Finding the Fourth Proportional to 64,777.80, 89,434.64 and 52,869.56

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Solution

The fourth proportional to 64,777.80, 89,434.64 and 52,869.56 is: 72,993.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,777.80 : 89,434.64 = 52,869.56 : x
  2. Step 2: Convert to fraction form
    64,777.80/89,434.64 = 52,869.56/x
  3. Step 3: Cross multiply
    64,777.80x = 89,434.64 × 52,869.56
  4. Step 4: Simplify right side
    64,777.80x = 4,728,370,065.56
  5. Step 5: Solve for x
    x = 4,728,370,065.56/64,777.80
  6. Step 6: Final answer
    x = 72,993.68

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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.