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Finding the Fourth Proportional to 56,468.20, 84,680.79 and 19,018.21

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Solution

The fourth proportional to 56,468.20, 84,680.79 and 19,018.21 is: 28,520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,468.20 : 84,680.79 = 19,018.21 : x
  2. Step 2: Convert to fraction form
    56,468.20/84,680.79 = 19,018.21/x
  3. Step 3: Cross multiply
    56,468.20x = 84,680.79 × 19,018.21
  4. Step 4: Simplify right side
    56,468.20x = 1,610,477,047.19
  5. Step 5: Solve for x
    x = 1,610,477,047.19/56,468.20
  6. Step 6: Final answer
    x = 28,520.07

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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.