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Finding the Fourth Proportional to 70,954.32, 97,917.64 and 39,124.36

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Solution

The fourth proportional to 70,954.32, 97,917.64 and 39,124.36 is: 53,991.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,954.32 : 97,917.64 = 39,124.36 : x
  2. Step 2: Convert to fraction form
    70,954.32/97,917.64 = 39,124.36/x
  3. Step 3: Cross multiply
    70,954.32x = 97,917.64 × 39,124.36
  4. Step 4: Simplify right side
    70,954.32x = 3,830,964,997.71
  5. Step 5: Solve for x
    x = 3,830,964,997.71/70,954.32
  6. Step 6: Final answer
    x = 53,991.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.