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Finding the Fourth Proportional to 42,878.92, 64,322.72 and 14,795.68

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Solution

The fourth proportional to 42,878.92, 64,322.72 and 14,795.68 is: 22,195.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,878.92 : 64,322.72 = 14,795.68 : x
  2. Step 2: Convert to fraction form
    42,878.92/64,322.72 = 14,795.68/x
  3. Step 3: Cross multiply
    42,878.92x = 64,322.72 × 14,795.68
  4. Step 4: Simplify right side
    42,878.92x = 951,698,381.85
  5. Step 5: Solve for x
    x = 951,698,381.85/42,878.92
  6. Step 6: Final answer
    x = 22,195.02

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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.