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Finding the Fourth Proportional to 80,460.61, 120,688.88 and 38,370.44

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Solution

The fourth proportional to 80,460.61, 120,688.88 and 38,370.44 is: 57,554.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,460.61 : 120,688.88 = 38,370.44 : x
  2. Step 2: Convert to fraction form
    80,460.61/120,688.88 = 38,370.44/x
  3. Step 3: Cross multiply
    80,460.61x = 120,688.88 × 38,370.44
  4. Step 4: Simplify right side
    80,460.61x = 4,630,885,538.58
  5. Step 5: Solve for x
    x = 4,630,885,538.58/80,460.61
  6. Step 6: Final answer
    x = 57,554.69

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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.