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Finding the Fourth Proportional to 77,483.32, 116,212.82 and 21,327.64

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Solution

The fourth proportional to 77,483.32, 116,212.82 and 21,327.64 is: 31,988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,483.32 : 116,212.82 = 21,327.64 : x
  2. Step 2: Convert to fraction form
    77,483.32/116,212.82 = 21,327.64/x
  3. Step 3: Cross multiply
    77,483.32x = 116,212.82 × 21,327.64
  4. Step 4: Simplify right side
    77,483.32x = 2,478,545,188.34
  5. Step 5: Solve for x
    x = 2,478,545,188.34/77,483.32
  6. Step 6: Final answer
    x = 31,988.11

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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.