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Finding the Fourth Proportional to 92,678.58, 138,910.32 and 42,653.64

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Solution

The fourth proportional to 92,678.58, 138,910.32 and 42,653.64 is: 63,930.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,678.58 : 138,910.32 = 42,653.64 : x
  2. Step 2: Convert to fraction form
    92,678.58/138,910.32 = 42,653.64/x
  3. Step 3: Cross multiply
    92,678.58x = 138,910.32 × 42,653.64
  4. Step 4: Simplify right side
    92,678.58x = 5,925,030,781.56
  5. Step 5: Solve for x
    x = 5,925,030,781.56/92,678.58
  6. Step 6: Final answer
    x = 63,930.96

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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.