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Finding the Fourth Proportional to 77,403.43, 116,102.71 and 21,999.43

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Solution

The fourth proportional to 77,403.43, 116,102.71 and 21,999.43 is: 32,998.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,403.43 : 116,102.71 = 21,999.43 : x
  2. Step 2: Convert to fraction form
    77,403.43/116,102.71 = 21,999.43/x
  3. Step 3: Cross multiply
    77,403.43x = 116,102.71 × 21,999.43
  4. Step 4: Simplify right side
    77,403.43x = 2,554,193,441.46
  5. Step 5: Solve for x
    x = 2,554,193,441.46/77,403.43
  6. Step 6: Final answer
    x = 32,998.45

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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.