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Finding the Fourth Proportional to 57,986.80, 86,980.20 and 16,434.16

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Solution

The fourth proportional to 57,986.80, 86,980.20 and 16,434.16 is: 24,651.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,986.80 : 86,980.20 = 16,434.16 : x
  2. Step 2: Convert to fraction form
    57,986.80/86,980.20 = 16,434.16/x
  3. Step 3: Cross multiply
    57,986.80x = 86,980.20 × 16,434.16
  4. Step 4: Simplify right side
    57,986.80x = 1,429,446,523.63
  5. Step 5: Solve for x
    x = 1,429,446,523.63/57,986.80
  6. Step 6: Final answer
    x = 24,651.24

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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.