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Finding the Fourth Proportional to 56,491.90, 84,745.05 and 21,441.58

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Solution

The fourth proportional to 56,491.90, 84,745.05 and 21,441.58 is: 32,165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,491.90 : 84,745.05 = 21,441.58 : x
  2. Step 2: Convert to fraction form
    56,491.90/84,745.05 = 21,441.58/x
  3. Step 3: Cross multiply
    56,491.90x = 84,745.05 × 21,441.58
  4. Step 4: Simplify right side
    56,491.90x = 1,817,067,769.18
  5. Step 5: Solve for x
    x = 1,817,067,769.18/56,491.90
  6. Step 6: Final answer
    x = 32,165.10

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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.