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Finding the Fourth Proportional to 70,966.80, 106,498.80 and 39,376.80

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Solution

The fourth proportional to 70,966.80, 106,498.80 and 39,376.80 is: 59,092.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,966.80 : 106,498.80 = 39,376.80 : x
  2. Step 2: Convert to fraction form
    70,966.80/106,498.80 = 39,376.80/x
  3. Step 3: Cross multiply
    70,966.80x = 106,498.80 × 39,376.80
  4. Step 4: Simplify right side
    70,966.80x = 4,193,581,947.84
  5. Step 5: Solve for x
    x = 4,193,581,947.84/70,966.80
  6. Step 6: Final answer
    x = 59,092.17

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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.