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Finding the Fourth Proportional to 77,663.16, 116,494.89 and 21,503.46

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Solution

The fourth proportional to 77,663.16, 116,494.89 and 21,503.46 is: 32,255.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,663.16 : 116,494.89 = 21,503.46 : x
  2. Step 2: Convert to fraction form
    77,663.16/116,494.89 = 21,503.46/x
  3. Step 3: Cross multiply
    77,663.16x = 116,494.89 × 21,503.46
  4. Step 4: Simplify right side
    77,663.16x = 2,505,043,207.32
  5. Step 5: Solve for x
    x = 2,505,043,207.32/77,663.16
  6. Step 6: Final answer
    x = 32,255.23

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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.