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Finding the Fourth Proportional to 56,120.40, 84,194.40 and 18,680.40

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Solution

The fourth proportional to 56,120.40, 84,194.40 and 18,680.40 is: 28,025.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,120.40 : 84,194.40 = 18,680.40 : x
  2. Step 2: Convert to fraction form
    56,120.40/84,194.40 = 18,680.40/x
  3. Step 3: Cross multiply
    56,120.40x = 84,194.40 × 18,680.40
  4. Step 4: Simplify right side
    56,120.40x = 1,572,785,069.76
  5. Step 5: Solve for x
    x = 1,572,785,069.76/56,120.40
  6. Step 6: Final answer
    x = 28,025.19

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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.