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Finding the Fourth Proportional to 56,559.94, 84,840.16 and 19,120.21

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Solution

The fourth proportional to 56,559.94, 84,840.16 and 19,120.21 is: 28,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,559.94 : 84,840.16 = 19,120.21 : x
  2. Step 2: Convert to fraction form
    56,559.94/84,840.16 = 19,120.21/x
  3. Step 3: Cross multiply
    56,559.94x = 84,840.16 × 19,120.21
  4. Step 4: Simplify right side
    56,559.94x = 1,622,161,675.63
  5. Step 5: Solve for x
    x = 1,622,161,675.63/56,559.94
  6. Step 6: Final answer
    x = 28,680.40

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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.