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Finding the Fourth Proportional to 70,377.86, 105,567.48 and 17,787.36

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Solution

The fourth proportional to 70,377.86, 105,567.48 and 17,787.36 is: 26,681.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,377.86 : 105,567.48 = 17,787.36 : x
  2. Step 2: Convert to fraction form
    70,377.86/105,567.48 = 17,787.36/x
  3. Step 3: Cross multiply
    70,377.86x = 105,567.48 × 17,787.36
  4. Step 4: Simplify right side
    70,377.86x = 1,877,766,771.05
  5. Step 5: Solve for x
    x = 1,877,766,771.05/70,377.86
  6. Step 6: Final answer
    x = 26,681.21

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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.