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Finding the Fourth Proportional to 76,528.53, 114,793.76 and 20,368.29

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Solution

The fourth proportional to 76,528.53, 114,793.76 and 20,368.29 is: 30,552.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,528.53 : 114,793.76 = 20,368.29 : x
  2. Step 2: Convert to fraction form
    76,528.53/114,793.76 = 20,368.29/x
  3. Step 3: Cross multiply
    76,528.53x = 114,793.76 × 20,368.29
  4. Step 4: Simplify right side
    76,528.53x = 2,338,152,492.03
  5. Step 5: Solve for x
    x = 2,338,152,492.03/76,528.53
  6. Step 6: Final answer
    x = 30,552.69

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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.