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Finding the Fourth Proportional to 77,487.92, 116,216.57 and 21,313.53

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Solution

The fourth proportional to 77,487.92, 116,216.57 and 21,313.53 is: 31,966.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,487.92 : 116,216.57 = 21,313.53 : x
  2. Step 2: Convert to fraction form
    77,487.92/116,216.57 = 21,313.53/x
  3. Step 3: Cross multiply
    77,487.92x = 116,216.57 × 21,313.53
  4. Step 4: Simplify right side
    77,487.92x = 2,476,985,404.48
  5. Step 5: Solve for x
    x = 2,476,985,404.48/77,487.92
  6. Step 6: Final answer
    x = 31,966.09

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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.