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Finding the Fourth Proportional to 70,998.94, 97,977.99 and 39,169.18

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Solution

The fourth proportional to 70,998.94, 97,977.99 and 39,169.18 is: 54,053.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,998.94 : 97,977.99 = 39,169.18 : x
  2. Step 2: Convert to fraction form
    70,998.94/97,977.99 = 39,169.18/x
  3. Step 3: Cross multiply
    70,998.94x = 97,977.99 × 39,169.18
  4. Step 4: Simplify right side
    70,998.94x = 3,837,717,526.35
  5. Step 5: Solve for x
    x = 3,837,717,526.35/70,998.94
  6. Step 6: Final answer
    x = 54,053.17

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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.