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Finding the Fourth Proportional to 112,620.96, 168,970.08 and 42,520.32

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Solution

The fourth proportional to 112,620.96, 168,970.08 and 42,520.32 is: 63,795.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,620.96 : 168,970.08 = 42,520.32 : x
  2. Step 2: Convert to fraction form
    112,620.96/168,970.08 = 42,520.32/x
  3. Step 3: Cross multiply
    112,620.96x = 168,970.08 × 42,520.32
  4. Step 4: Simplify right side
    112,620.96x = 7,184,661,872.03
  5. Step 5: Solve for x
    x = 7,184,661,872.03/112,620.96
  6. Step 6: Final answer
    x = 63,795.07

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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.