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Finding the Fourth Proportional to 56,107.80, 84,156.84 and 18,655.83

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Solution

The fourth proportional to 56,107.80, 84,156.84 and 18,655.83 is: 27,982.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,107.80 : 84,156.84 = 18,655.83 : x
  2. Step 2: Convert to fraction form
    56,107.80/84,156.84 = 18,655.83/x
  3. Step 3: Cross multiply
    56,107.80x = 84,156.84 × 18,655.83
  4. Step 4: Simplify right side
    56,107.80x = 1,570,015,700.38
  5. Step 5: Solve for x
    x = 1,570,015,700.38/56,107.80
  6. Step 6: Final answer
    x = 27,982.13

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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.