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Finding the Fourth Proportional to 76,320.24, 114,473.76 and 20,916.24

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Solution

The fourth proportional to 76,320.24, 114,473.76 and 20,916.24 is: 31,372.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,320.24 : 114,473.76 = 20,916.24 : x
  2. Step 2: Convert to fraction form
    76,320.24/114,473.76 = 20,916.24/x
  3. Step 3: Cross multiply
    76,320.24x = 114,473.76 × 20,916.24
  4. Step 4: Simplify right side
    76,320.24x = 2,394,360,637.86
  5. Step 5: Solve for x
    x = 2,394,360,637.86/76,320.24
  6. Step 6: Final answer
    x = 31,372.55

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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.