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Finding the Fourth Proportional to 80,349.27, 120,492.66 and 42,888.89

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Solution

The fourth proportional to 80,349.27, 120,492.66 and 42,888.89 is: 64,316.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,349.27 : 120,492.66 = 42,888.89 : x
  2. Step 2: Convert to fraction form
    80,349.27/120,492.66 = 42,888.89/x
  3. Step 3: Cross multiply
    80,349.27x = 120,492.66 × 42,888.89
  4. Step 4: Simplify right side
    80,349.27x = 5,167,796,902.61
  5. Step 5: Solve for x
    x = 5,167,796,902.61/80,349.27
  6. Step 6: Final answer
    x = 64,316.67

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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.