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Finding the Fourth Proportional to 57,809.80, 79,777.04 and 40,606.34

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Solution

The fourth proportional to 57,809.80, 79,777.04 and 40,606.34 is: 56,036.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,809.80 : 79,777.04 = 40,606.34 : x
  2. Step 2: Convert to fraction form
    57,809.80/79,777.04 = 40,606.34/x
  3. Step 3: Cross multiply
    57,809.80x = 79,777.04 × 40,606.34
  4. Step 4: Simplify right side
    57,809.80x = 3,239,453,610.43
  5. Step 5: Solve for x
    x = 3,239,453,610.43/57,809.80
  6. Step 6: Final answer
    x = 56,036.41

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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.