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Finding the Fourth Proportional to 56,006.10, 84,009.15 and 20,943.90

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Solution

The fourth proportional to 56,006.10, 84,009.15 and 20,943.90 is: 31,415.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,006.10 : 84,009.15 = 20,943.90 : x
  2. Step 2: Convert to fraction form
    56,006.10/84,009.15 = 20,943.90/x
  3. Step 3: Cross multiply
    56,006.10x = 84,009.15 × 20,943.90
  4. Step 4: Simplify right side
    56,006.10x = 1,759,479,236.69
  5. Step 5: Solve for x
    x = 1,759,479,236.69/56,006.10
  6. Step 6: Final answer
    x = 31,415.85

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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.